HMSM K17
Protected Area
Isle of May
Why dive here
With 112+ marine species recorded in the area - including dolphins, dwarf minke whales, humpback whales, ocean sunfish (mola mola) and orcas - HMSM K17 offers some of Scottish East Coast & Borders's richest wreck diving.
The K17 is not a dive for the faint of heart, but for those who know their way around a drysuit in colder water, it’s a proper dive into history. Lying at 49 metres, this WWI submarine has a palpable sense of tragedy about her, sunk during the ‘Battle of May Island’ in 1918 after a collision with HMS Fearless. We’ve always been drawn to wrecks that tell a story, and the K17 absolutely delivers. You’ll find her upright, remarkably intact for her age and depth, with the bow section bearing the scars of that fateful night. Penetration is for the experienced and suitably equipped, but there’s plenty to explore on the exterior. The conning tower is still prominent, and you can trace the length of her deck, often finding lumpsuckers clinging to the metalwork or a curious wolf fish peering from a porthole. We love seeing how the wreck has become a home, with plumose anemones carpeting sections and shoals of coalfish darting through the superstructure. Visibility can be a bit variable, but on a good day, the sheer scale of this submarine is impressive. Definitely bring your twinset and a good torch; it’s a dark dive, but utterly rewarding.
Typical HMSM K17 Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Maximum depth 49m exceeds recreational limits (40m). Technical diving certification and equipment required.
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Always perform a 3-minute safety stop at 5m before surfacing.
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