wreck

Log This Dive

U 400 (POSSIBLY)

Now this one, for us, is pure speculation and that’s what makes it so damn interesting. The U-400, a Type VIIC U-boat, went down off the Cornish coast in December 1944. Officially, it was mined, but finding the wreck has proven… elusive. We’re talking about diving to 56 metres here, a serious technical dive, often in challenging conditions. When you drop down onto *this* wreck – if it truly is the U-400 – the feeling of history is palpable. The darkness, the cold, the sheer depth – it all adds to the atmosphere. The wreck itself lies on a silty seabed, usually upright but often partially buried. It's a proper submarine shape, recognisable even with the years of growth. We’ve found the conning tower often intact, draped in fishing nets and anemones, with shoals of bib darting through the periscope shears. Heading along the deck, you’ll spot sections of the casing starting to peel away, revealing the pressure hull beneath. It’s a somber, industrial landscape down there, colonised by the sea. Think big conger eels lurking in torpedo tubes, spider crabs scuttling over the hull, and dense clouds of plumose anemones blooming from every crevice. Visibility can be hit or miss, but when it's good, seeing that long, grey silhouette emerge from the gloom is genuinely special. It suits experienced wreck divers who appreciate the hunt as much as the dive itself, and who are properly kitted out for deep, cold water.