The world of sailing has commemorated the death of British Olympic gold medalist Andrew "Bart" Simpson, four years on from the day when the sailor tragically lost his life after his America's Cup class boat capsized during a training exercise on 9 May, 2013.

Tributes have poured in from across the maritime community with the hashtag #SailOnBart, in memory of Simpson, who won an Olympic gold medal for Team GB at the 2008 Beijing Olympics and a silver medal at London 2012.

The occasion is a particularly poignant one for Artemis Racing Sweden and Simpson's former friend and teammate Iain Percy. Percy was a childhood friend of Simpson's before the pair sailed together in Beijing and London, and was his teammate in the Swedish team during their ill-fated 2013 America's Cup campaign.