Lower Lough Erne however is a more traditional open body of water.

BBC: Travel - Slideshow - Top 21 under-the-radar destinations

The man's friend, also from Germany, was killed after their cruiser ran aground on Cleenishgarve Island near Castle Archdale on Lower Lough Erne.

BBC: Inland lifeboat station opens

Enniskillen, which operates two bases on Upper and Lower Lough Erne in County Fermanagh and which is Northern Ireland's only inland RNLI station, launched 46 times and brought 50 people to safety.

BBC: 413 callouts for RNLI lifeboat crews in Northern Ireland