In this BILA lecture, Philippa Hopkins QC and David Walsh of Essex Court Chambers will examine the recent Supreme Court decision in Navigators Insurance Company Limited & ors v Atlasnavios – Navegação LDA (The “B Atlantic”) [2018] UKSC 26, in which the Court held that war risks underwriters were not liable for the total loss of the “B Atlantic”, which had been confiscated by the Venezuelan authorities after cocaine was found attached to her hull. They will consider the Supreme Court’s treatment of the malicious act peril and the infringement of customs regulations exclusion, and they will reflect on the implications of the case for the market.