Another ex seafarer here, but of a later generation. I was an engineer cadet, 1971 intake with BP. I don't recollect sailing with any WW2 veterans, I think most would have retired by then (you could retire at 50). I too have visited the MN memorial at Tower Hill, looking particularly at the large number of men and ships my old company lost in the war.
BP had about 9 ships involved in the Falklands War. I was on leave at the time but joined one of the ships in Portland on its return from the South Atlantic. It had a lucky escape when a bomb from an Argentinian transporter plane landed on the deck, bounced over the side and exploded alongside the ship. The ship was not damaged, but the shock of the explosion tripped the electrical breakers on the switchboard and blacked out the ship.
I will also be raising all class to all the seafarers on Friday, as well as to all the forces personnel and civilians who made the ultimate sacrifice.