HMS K4

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 - HMS K4 offers some of Scottish East Coast & Borders's richest wreck diving.

Marine lifeDolphins, Dwarf Minke Whales, Humpback Whales, Ocean Sunfish (Mola Mola) and Orcas · 112+ species recorded

CharacterWreck dive

StandoutRich in charismatic marine life

The K4, a British K-class submarine, lies in the chilly embrace of the North Sea, a properly challenging dive for the experienced cold-water wreck enthusiast. When we descend, the first thing that hits you is the sheer size of her, even broken up. She went down in 1917 after a collision, so you’re looking at a piece of naval history, not just a pile of metal. We love exploring the forward sections, where the torpedo tubes are still discernible, even with decades of growth. It’s dark down there, even on a sunny day, so good lights are essential – we always bring a backup. The wreck has become a home for some impressively large conger eels; they peek out from every gap, almost like guardians. We’ve also spotted some hefty ling lurking in the more protected areas. Visibility can be hit or miss, but on a good day, the scale of the wreck really comes into focus, and you can appreciate the tragic story she tells. It’s a proper dive, certainly not for beginners, and the currents here can be a serious consideration, so always dive this one with a knowledgeable local skipper.