New details made public today on the amazing story of the Derry divers who found a shipwreck off the Donegal coast 50 years to the day since La Trinidad Valencera was found The crew that found the La Trinidad Valencera. Reporter: '); '); The Tower Museum in Derry is today celebrating one of the most significant underwater archaeological finds in North West maritime history with a release of new online content. Today marks 50 years since 13 divers from the City of Derry Sub Aqua Club found the final resting place of La Trinidad Valencera – a Spanish Armada ship wrecked off Kinnagoe Bay in 1588.