BOYNE CASTLE

Protected Area

St Abb`s Head to Fast Castle

Why dive here

With 112+ marine species recorded in the area - including dolphins, dwarf minke whales, humpback whales, ocean sunfish (mola mola) and orcas - BOYNE CASTLE 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 · max 59m

StandoutRich in charismatic marine life

Boyne Castle, now that’s a proper dive. At 59 metres, it’s certainly not for everyone, but if you’re tech-qualified, this steamship is an absolute beauty. We love the way she sits upright on the seabed, almost as if she just decided to stop for a rest. Dropping down, you’ll start to pick out the distinct silhouette of her single boiler and the compound expansion engine. There's a real sense of history here, the wood of the decking long gone, leaving the skeletal steel structure for you to explore. The visibility can be a bit hit-and-miss, typical for Scottish waters, but when it's good, you can appreciate the sheer size of her – 35.7 metres of pure history. Our favourite part has to be the stern, where you can often find conger eels peering out from gaps in the plating, and the prop shaft tunnel is an interesting swim-through if you’re careful. Keep an eye out for inquisitive wrasse darting in and out of the nooks and crannies. We’d suggest picking a slack tide for the best conditions; otherwise, the current can make navigating the descent line a real workout. This wreck suits divers who appreciate historical integrity and don’t mind a bit of a challenge.

Typical BOYNE CASTLE 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 59m 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.

Today06:3217:2010h 48m daylightGolden hour 16:29

BOYNE CASTLE Wreck History

Year Sunk

1917

Vessel Type

cargo ship

Cause

torpedo

Tonnage

227 GRT

The SS Boyne Castle was a small steamship built in 1909 by the Dundee Shipbuilding Co. for the Banffshire Steam Shipping Co. For years, she plied the coastal routes of the United Kingdom, a typical workhorse of her era. With the outbreak of the First World War, these merchant vessels became prime targets for Germany's U-boat fleet. On February 7, 1917, while on passage, the Boyne Castle's fate was sealed when it was attacked and sunk by a torpedo from the German submarine UC-47, captained by Paul Hundius.

Resting at a depth of 59 meters off the Scottish East Coast, the Boyne Castle is a classic WWI wreck that demands technical diving certification and experience. The depth has helped preserve the wreck from the worst of the sea's effects, and divers can explore a vessel frozen in time for over a century. Highlights of the dive include the ship's single boiler and compound expansion engine, which stand proud of the seabed. Exploring this casualty of war offers a somber reminder of the conflict that once raged in these now-peaceful waters.