Malin Head

This is a charter operation rather than a dive holiday. A day means an early start, a long steam offshore in a hard boat, and one dive planned around slack water on a shot dropped onto the wreck. Bottom time is short and the ascent is not, so teams hang on the line and finish drifting on a marker before the pickup. Some days end with a shallower second dive inshore. Plenty of days end with nothing at all, because the sea made the decision before the crew did.

There is no scenery to speak of at the depths that matter. The ground is a swept seabed with enormous steel structures standing on it, and the dives are about scale rather than terrain: hull plating running off into the dark, boilers and machinery standing clear of the sand, debris fields spread wider than any single dive can cover. Atlantic water keeps visibility high for this latitude, but depth strips the colour out, so everything worth seeing is seen by torchlight.

The named ships are the draw, but the ground holds more than those, and identification on some hulls is still argued over — the Empire Heritage and the rescue ship Pinto, lost to the same U-boat within hours of her, are reported to have been mistaken for one another. The written history is uneven too: the Admiralty is generally held to have kept the loss of Audacious out of official announcements until after the Armistice. Serious teams work one ship per trip, several dives across a week, each planned as a look at one section.

Sort the logistics before the diving. Gas fills and rebreather consumables have to be arranged with the charter or brought from home, the kit travel is heavy, and there is no walking away from an equipment problem once you are offshore. All of these hulls are grave sites and the First World War ships are now old enough for Ireland's historic-wreck protections, so charters dive them look-only. The filter is otherwise an honest one: the divers who get value here already dive as a settled team and can lose most of a booked week to a forecast without it wrecking the trip. Everyone else gets the inshore rock and kelp.