Concerning Robert Maxwell, in wikipedia
On 4 November 1991, Maxwell, had an argumentative phone call with his son Kevin over a meeting scheduled with the Bank of England on Maxwell's default on £50,000,000 in loans. Maxwell missed the meeting, instead traveling to his yacht, Lady Ghislaine, in the Canary Islands.[1]
Could this be the boat (yacht) from the pic where Billy and his pals are wading in water next to a boat?