Boskalis Annual Report 2018

ANNUAL REPORT 2018 – BOSKALIS 141

RISK

OUR AUDIT APPROACH

KEY OBSERVATIONS

UNCERTAIN TAX POSITIONS (SEE NOTE 3.28 AND 12) Boskalis operates in a range of jurisdictions subject to different tax regimes. The cross-border operations may result in estimation differences or disputes with national tax authorities. If

In our audit approach, we tested the acceptability of the accruals formed in this estimation process. In doing so, we used tax specialists in reviewing the assumptions underlying the estimates and discussing them with management in the light of local tax rules and regulations. In connection with this, we also devoted attention to the substantiation of the estimated probability of the positions taken and details provided thereon by management and we assessed the historical accuracy of management’s assumptions.

We assessed that the Company’s accounting policies were appropriately applied. Furthermore, we have assessed that management assumptions and estimates are within an acceptable range. We further assessed that the disclosure notes are appropriate.

management considers it probable that such disputes will lead to an outflow of resources, accruals have been formed accordingly. We therefore identified correct and complete recognition of accruals for uncertain tax positions as significant to our audit.

REPORT ON OTHER INFORMATION INCLUDED IN THE ANNUAL REPORT

NO PROHIBITED NON-AUDIT SERVICES We have not provided prohibited non-audit services as referred to in Article 5(1) of the EU Regulation on specifc requirements regarding statutory audit of public-interest entities.

In addition to the fnancial statements and our auditor’s report thereon, the annual report contains other information that consists of: ‚ ‚ The Report of the Board of Management and the Report of the Supervisory Board ‚ ‚ The Chairman’s Statement, Boskalis at a Glance and Other Information ‚ ‚ Other information pursuant to Part 9 of Book 2 of the Dutch Civil Code (included in the Financial Statements 2018 section) Based on the following procedures performed, we conclude that the other information: ‚ ‚ Is consistent with the financial statements and does not contain material misstatements ‚ ‚ Contains the information as required by Part 9 of Book 2 of the Dutch Civil Code We have read the other information. Based on our knowledge and understanding obtained through our audit of the fnancial statements or otherwise, we have considered whether the other information contains material misstatements. By performing these procedures, we comply with the requirements of Part 9 of Book 2 of the Dutch Civil Code and the Dutch Standard 720. The scope of the procedures performed is substantially less than the scope of those performed in our audit of the fnancial statements. Management is responsible for the preparation of the other information, including the Report of the Board of Management in accordance with Part 9 of Book 2 of the Dutch Civil Code and other information as required by Part 9 of Book 2 of the Dutch Civil Code.

DESCRIPTION OF RESPONSIBILITIES FOR THE FINANCIAL STATEMENTS

RESPONSIBILITIES OF THE BOARD OF MANAGEMENT AND THE SUPERVISORY BOARD FOR THE FINANCIAL STATEMENTS Management is responsible for the preparation and fair presentation of the fnancial statements in accordance with EU-IFRS and Part 9 of Book 2 of the Dutch Civil Code. Furthermore, management is responsible for such internal control as management determines is necessary to enable the preparation of the fnancial statements that are free from material misstatement, whether due to fraud or error. going concern. Based on the fnancial reporting frameworks mentioned, management should prepare the fnancial statements using the going concern basis of accounting unless management either intends to liquidate the company or to cease operations, or has no realistic alternative but to do so. Management should disclose events and circumstances that may cast signifcant doubt on the company’s ability to continue as a going concern in the fnancial statements. As part of the preparation of the fnancial statements, management is responsible for assessing the company’s ability to continue as a

The Supervisory Board is responsible for overseeing the company’s fnancial reporting process.

REPORT ON OTHER LEGAL AND REGULATORY REQUIREMENTS

OUR RESPONSIBILITIES FOR THE AUDIT OF THE FINANCIAL STATEMENTS Our objective is to plan and perform the audit engagement in a manner that allows us to obtain suffcient and appropriate audit evidence for our opinion. Our audit has been performed with a high, but not absolute, level of assurance, which means we may not have detected all material errors and fraud during our audit.

ENGAGEMENT We were engaged by the Annual General Meeting as auditor of Royal Boskalis Westminster N.V. on 13 May 2014, as of the audit for the year 2014 and have operated as statutory auditor ever since that date.