﻿<?xml version="1.0" encoding="utf-8"?>
<!--Generated by DataTracks Rainbow version 3.5 for Toppan Merrill on 20-April-2023 [06:55:25] {PM}-->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <roleRef xlink:type="simple" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#ConsolidatedIncomeStatement" roleURI="http://www.emgs.com/role/ConsolidatedIncomeStatement" />
  <roleRef xlink:type="simple" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#ConsolidatedStatementOfOtherComprehensiveIncome" roleURI="http://www.emgs.com/role/ConsolidatedStatementOfOtherComprehensiveIncome" />
  <roleRef xlink:type="simple" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#ConsolidatedStatementOfFinancialPosition" roleURI="http://www.emgs.com/role/ConsolidatedStatementOfFinancialPosition" />
  <roleRef xlink:type="simple" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#ConsolidatedStatementOfCashFlows" roleURI="http://www.emgs.com/role/ConsolidatedStatementOfCashFlows" />
  <roleRef xlink:type="simple" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#ConsolidatedStatementOfChangesInEquity" roleURI="http://www.emgs.com/role/ConsolidatedStatementOfChangesInEquity" />
  <calculationLink xlink:type="extended" xlink:role="http://www.emgs.com/role/ConsolidatedIncomeStatement">
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ProfitLoss" xlink:label="loc_ifrs-full_ProfitLoss" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss" xlink:to="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" use="optional" order="1" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="loc_ifrs-full_ProfitLossBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss" xlink:to="loc_ifrs-full_ProfitLossBeforeTax" use="optional" order="2" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities" use="optional" order="3" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_RevenuesExcludingRevenuesFromInterest" xlink:label="loc_EMGS_RevenuesExcludingRevenuesFromInterest" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities" xlink:to="loc_EMGS_RevenuesExcludingRevenuesFromInterest" use="optional" order="4" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_RevenueFromContractsWithCustomers" xlink:label="loc_ifrs-full_RevenueFromContractsWithCustomers" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_EMGS_RevenuesExcludingRevenuesFromInterest" xlink:to="loc_ifrs-full_RevenueFromContractsWithCustomers" use="optional" order="5" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OtherRevenue" xlink:label="loc_ifrs-full_OtherRevenue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_EMGS_RevenuesExcludingRevenuesFromInterest" xlink:to="loc_ifrs-full_OtherRevenue" use="optional" order="6" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_MultiClientPreFunding" xlink:label="loc_EMGS_MultiClientPreFunding" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_EMGS_RevenuesExcludingRevenuesFromInterest" xlink:to="loc_EMGS_MultiClientPreFunding" use="optional" order="7" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_MulticlientLateSales" xlink:label="loc_EMGS_MulticlientLateSales" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_EMGS_RevenuesExcludingRevenuesFromInterest" xlink:to="loc_EMGS_MulticlientLateSales" use="optional" order="8" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OperatingExpense" xlink:label="loc_ifrs-full_OperatingExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities" xlink:to="loc_ifrs-full_OperatingExpense" use="optional" order="9" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_EmployeeBenefitsExpense" xlink:label="loc_ifrs-full_EmployeeBenefitsExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_OperatingExpense" xlink:to="loc_ifrs-full_EmployeeBenefitsExpense" use="optional" order="10" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_OtherDepreciationAndAmortisation" xlink:label="loc_EMGS_OtherDepreciationAndAmortisation" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_OperatingExpense" xlink:to="loc_EMGS_OtherDepreciationAndAmortisation" use="optional" order="11" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_MiscellaneousOtherOperatingExpense" xlink:label="loc_ifrs-full_MiscellaneousOtherOperatingExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_OperatingExpense" xlink:to="loc_ifrs-full_MiscellaneousOtherOperatingExpense" use="optional" order="12" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_DepreciationRightofuseAssets" xlink:label="loc_ifrs-full_DepreciationRightofuseAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_OperatingExpense" xlink:to="loc_ifrs-full_DepreciationRightofuseAssets" use="optional" order="13" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_CharterHireFuelAndCrewExpenses" xlink:label="loc_EMGS_CharterHireFuelAndCrewExpenses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_OperatingExpense" xlink:to="loc_EMGS_CharterHireFuelAndCrewExpenses" use="optional" order="14" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_MulticlientAmortisationExpenses" xlink:label="loc_EMGS_MulticlientAmortisationExpenses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_OperatingExpense" xlink:to="loc_EMGS_MulticlientAmortisationExpenses" use="optional" order="15" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_FinanceIncomeCost" xlink:label="loc_ifrs-full_FinanceIncomeCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax" xlink:to="loc_ifrs-full_FinanceIncomeCost" use="optional" order="16" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_RevenueFromInterest" xlink:label="loc_ifrs-full_RevenueFromInterest" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_FinanceIncomeCost" xlink:to="loc_ifrs-full_RevenueFromInterest" use="optional" order="17" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_InterestExpenseOnBondsPartnerContributionAndOtherInterestExpenses" xlink:label="loc_EMGS_InterestExpenseOnBondsPartnerContributionAndOtherInterestExpenses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_FinanceIncomeCost" xlink:to="loc_EMGS_InterestExpenseOnBondsPartnerContributionAndOtherInterestExpenses" use="optional" order="18" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:label="loc_ifrs-full_InterestExpenseOnLeaseLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_FinanceIncomeCost" xlink:to="loc_ifrs-full_InterestExpenseOnLeaseLiabilities" use="optional" order="19" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ImpairmentLossOnFinancialAssets" xlink:label="loc_ifrs-full_ImpairmentLossOnFinancialAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_FinanceIncomeCost" xlink:to="loc_ifrs-full_ImpairmentLossOnFinancialAssets" use="optional" order="20" weight="-1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_NetGainsAndLossesOfFinancialAssetsAndLiabilities" xlink:label="loc_EMGS_NetGainsAndLossesOfFinancialAssetsAndLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_FinanceIncomeCost" xlink:to="loc_EMGS_NetGainsAndLossesOfFinancialAssetsAndLiabilities" use="optional" order="21" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_NetForeignCurrencyIncomeLoss" xlink:label="loc_EMGS_NetForeignCurrencyIncomeLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_FinanceIncomeCost" xlink:to="loc_EMGS_NetForeignCurrencyIncomeLoss" use="optional" order="22" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.emgs.com/role/ConsolidatedStatementOfOtherComprehensiveIncome">
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ComprehensiveIncome" xlink:label="loc_ifrs-full_ComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OtherComprehensiveIncome" xlink:label="loc_ifrs-full_OtherComprehensiveIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome" xlink:to="loc_ifrs-full_OtherComprehensiveIncome" use="optional" order="1" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncome" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" use="optional" order="2" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ProfitLoss" xlink:label="loc_ifrs-full_ProfitLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome" xlink:to="loc_ifrs-full_ProfitLoss" use="optional" order="3" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.emgs.com/role/ConsolidatedStatementOfFinancialPosition">
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_Assets" xlink:label="loc_ifrs-full_Assets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CurrentAssets" xlink:label="loc_ifrs-full_CurrentAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_Assets" xlink:to="loc_ifrs-full_CurrentAssets" use="optional" order="1" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_Inventories" xlink:label="loc_ifrs-full_Inventories" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="loc_ifrs-full_Inventories" use="optional" order="2" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CurrentTradeReceivables" xlink:label="loc_ifrs-full_CurrentTradeReceivables" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="loc_ifrs-full_CurrentTradeReceivables" use="optional" order="3" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OtherCurrentReceivables" xlink:label="loc_ifrs-full_OtherCurrentReceivables" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="loc_ifrs-full_OtherCurrentReceivables" use="optional" order="4" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CurrentFinanceLeaseReceivables" xlink:label="loc_ifrs-full_CurrentFinanceLeaseReceivables" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="loc_ifrs-full_CurrentFinanceLeaseReceivables" use="optional" order="5" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="loc_ifrs-full_CashAndCashEquivalents" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="loc_ifrs-full_CashAndCashEquivalents" use="optional" order="6" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CurrentRestrictedCashAndCashEquivalents" xlink:label="loc_ifrs-full_CurrentRestrictedCashAndCashEquivalents" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="loc_ifrs-full_CurrentRestrictedCashAndCashEquivalents" use="optional" order="7" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_NoncurrentAssets" xlink:label="loc_ifrs-full_NoncurrentAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_Assets" xlink:to="loc_ifrs-full_NoncurrentAssets" use="optional" order="8" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_PropertyPlantAndEquipmentExcludingAssetsUnderConstruction" xlink:label="loc_EMGS_PropertyPlantAndEquipmentExcludingAssetsUnderConstruction" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets" xlink:to="loc_EMGS_PropertyPlantAndEquipmentExcludingAssetsUnderConstruction" use="optional" order="9" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_MulticlientLibrary" xlink:label="loc_EMGS_MulticlientLibrary" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets" xlink:to="loc_EMGS_MulticlientLibrary" use="optional" order="10" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OtherIntangibleAssets" xlink:label="loc_ifrs-full_OtherIntangibleAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets" xlink:to="loc_ifrs-full_OtherIntangibleAssets" use="optional" order="11" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_RightofuseAssets" xlink:label="loc_ifrs-full_RightofuseAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets" xlink:to="loc_ifrs-full_RightofuseAssets" use="optional" order="12" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_NoncurrentFinanceLeaseReceivables" xlink:label="loc_ifrs-full_NoncurrentFinanceLeaseReceivables" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets" xlink:to="loc_ifrs-full_NoncurrentFinanceLeaseReceivables" use="optional" order="13" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ConstructionInProgress" xlink:label="loc_ifrs-full_ConstructionInProgress" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets" xlink:to="loc_ifrs-full_ConstructionInProgress" use="optional" order="14" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OtherNoncurrentReceivables" xlink:label="loc_ifrs-full_OtherNoncurrentReceivables" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets" xlink:to="loc_ifrs-full_OtherNoncurrentReceivables" use="optional" order="15" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.emgs.com/role/ConsolidatedStatementOfFinancialPosition">
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_EquityAndLiabilities" xlink:label="loc_ifrs-full_EquityAndLiabilities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_Equity" xlink:label="loc_ifrs-full_Equity" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAndLiabilities" xlink:to="loc_ifrs-full_Equity" use="optional" order="16" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_ShareCapitalSharePremiumAndOtherPaidInEquity" xlink:label="loc_EMGS_ShareCapitalSharePremiumAndOtherPaidInEquity" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_Equity" xlink:to="loc_EMGS_ShareCapitalSharePremiumAndOtherPaidInEquity" use="optional" order="17" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OtherReserves" xlink:label="loc_ifrs-full_OtherReserves" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_Equity" xlink:to="loc_ifrs-full_OtherReserves" use="optional" order="18" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_RetainedEarnings" xlink:label="loc_ifrs-full_RetainedEarnings" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_Equity" xlink:to="loc_ifrs-full_RetainedEarnings" use="optional" order="19" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_Liabilities" xlink:label="loc_ifrs-full_Liabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAndLiabilities" xlink:to="loc_ifrs-full_Liabilities" use="optional" order="20" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_NoncurrentLiabilities" xlink:label="loc_ifrs-full_NoncurrentLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_Liabilities" xlink:to="loc_ifrs-full_NoncurrentLiabilities" use="optional" order="21" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_NoncurrentProvisions" xlink:label="loc_ifrs-full_NoncurrentProvisions" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities" xlink:to="loc_ifrs-full_NoncurrentProvisions" use="optional" order="22" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_LongtermBorrowings" xlink:label="loc_ifrs-full_LongtermBorrowings" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities" xlink:to="loc_ifrs-full_LongtermBorrowings" use="optional" order="23" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_NoncurrentLeaseLiabilities" xlink:label="loc_ifrs-full_NoncurrentLeaseLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities" xlink:to="loc_ifrs-full_NoncurrentLeaseLiabilities" use="optional" order="24" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CurrentLiabilities" xlink:label="loc_ifrs-full_CurrentLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_Liabilities" xlink:to="loc_ifrs-full_CurrentLiabilities" use="optional" order="25" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities" xlink:to="loc_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" use="optional" order="26" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:label="loc_ifrs-full_CurrentTaxLiabilitiesCurrent" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities" xlink:to="loc_ifrs-full_CurrentTaxLiabilitiesCurrent" use="optional" order="27" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_OtherShortTermLiabilities" xlink:label="loc_EMGS_OtherShortTermLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities" xlink:to="loc_EMGS_OtherShortTermLiabilities" use="optional" order="28" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CurrentLeaseLiabilities" xlink:label="loc_ifrs-full_CurrentLeaseLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities" xlink:to="loc_ifrs-full_CurrentLeaseLiabilities" use="optional" order="29" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.emgs.com/role/ConsolidatedStatementOfCashFlows">
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" use="optional" order="1" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:label="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" use="optional" order="2" weight="-1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_InvestmentInMultiClientLibraryClassifiedAsInvestingActivities" xlink:label="loc_EMGS_InvestmentInMultiClientLibraryClassifiedAsInvestingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="loc_EMGS_InvestmentInMultiClientLibraryClassifiedAsInvestingActivities" use="optional" order="3" weight="-1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_PurchaseOfIntangibleAssets" xlink:label="loc_EMGS_PurchaseOfIntangibleAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="loc_EMGS_PurchaseOfIntangibleAssets" use="optional" order="4" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" use="optional" order="5" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:label="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" use="optional" order="6" weight="-1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_InterestLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:label="loc_EMGS_InterestLeaseLiabilitiesClassifiedAsFinancingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="loc_EMGS_InterestLeaseLiabilitiesClassifiedAsFinancingActivities" use="optional" order="7" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:label="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" use="optional" order="8" weight="-1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_InterestPaid" xlink:label="loc_EMGS_InterestPaid" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="loc_EMGS_InterestPaid" use="optional" order="9" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" use="optional" order="10" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="loc_ifrs-full_ProfitLossBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_ProfitLossBeforeTax" use="optional" order="11" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities" xlink:label="loc_ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities" use="optional" order="12" weight="-1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_AdjustmentsForOtherDepreciationAndAmortisation" xlink:label="loc_EMGS_AdjustmentsForOtherDepreciationAndAmortisation" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_EMGS_AdjustmentsForOtherDepreciationAndAmortisation" use="optional" order="13" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_AdjustmentsForMultiClientAmortisation" xlink:label="loc_EMGS_AdjustmentsForMultiClientAmortisation" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_EMGS_AdjustmentsForMultiClientAmortisation" use="optional" order="14" weight="1" />
    <loc xlink:type="locator" xlink:href="5967007LIEEXZXI7OG55-2022-12-31.xsd#emgs_AdjustmentsForDepreciationRightOfUseAssets" xlink:label="loc_EMGS_AdjustmentsForDepreciationRightOfUseAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_EMGS_AdjustmentsForDepreciationRightOfUseAssets" use="optional" order="15" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_AdjustmentsForSharebasedPayments" xlink:label="loc_ifrs-full_AdjustmentsForSharebasedPayments" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_AdjustmentsForSharebasedPayments" use="optional" order="16" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:label="loc_ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" use="optional" order="17" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" use="optional" order="18" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" use="optional" order="19" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable" use="optional" order="20" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OtherAdjustmentsToReconcileProfitLoss" xlink:label="loc_ifrs-full_OtherAdjustmentsToReconcileProfitLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_OtherAdjustmentsToReconcileProfitLoss" use="optional" order="21" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_AdjustmentsForFinanceIncome" xlink:label="loc_ifrs-full_AdjustmentsForFinanceIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_AdjustmentsForFinanceIncome" use="optional" order="22" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_AdjustmentsForFinanceCosts" xlink:label="loc_ifrs-full_AdjustmentsForFinanceCosts" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="loc_ifrs-full_AdjustmentsForFinanceCosts" use="optional" order="23" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://www.emgs.com/role/ConsolidatedStatementOfChangesInEquity">
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ComprehensiveIncome" xlink:label="loc_ifrs-full_ComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ProfitLoss" xlink:label="loc_ifrs-full_ProfitLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome" xlink:to="loc_ifrs-full_ProfitLoss" use="optional" order="1" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_OtherComprehensiveIncome" xlink:label="loc_ifrs-full_OtherComprehensiveIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome" xlink:to="loc_ifrs-full_OtherComprehensiveIncome" use="optional" order="2" weight="1" />
  </calculationLink>
</linkbase>