BOYNE CASTLE (POSSIBLY)

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 (POSSIBLY) 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 48m

StandoutRich in charismatic marine life

The **Boyne Castle** is a genuine treat for anyone who appreciates a proper history dive, sitting quietly at 48 metres. We’ve found her to be surprisingly intact for her age, a steamship from 1909 that met her end in 1917, and there’s a real sense of her former life here. You’ll spend your bottom time tracing her lines, perhaps peering into where the single boiler would have sat, and imagining the journey she was on from Macduff to Sunderland. Visibility on the Scottish East Coast can be a bit of a lottery, but when it’s good, the Boyne Castle reveals herself in satisfying detail, a dark silhouette against the deep. Our favourite moments are often spent just drifting along her deck, watching the resident wrasse dart between the rusted plating, and the occasional ling peeking from a dark crevice. This wreck really suits experienced divers with solid deep diving skills, those who appreciate the quiet solitude of a less-frequented historical site and the specific challenges of cold-water wreck diving. Come prepared for the depth and the chill, and you’ll find the Boyne Castle an absorbing dive.

Typical BOYNE CASTLE (POSSIBLY) 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 48m 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.

Today06:3117:2010h 48m daylightGolden hour 16:28

BOYNE CASTLE (POSSIBLY) Wreck History

Year Sunk

1917

Vessel Type

cargo ship

Cause

torpedo

Tonnage

227 GRT

The SS Boyne Castle, a 227-ton steamship built in Dundee in 1909, became another victim of the relentless U-boat campaign of World War I. While serving as a merchant vessel for the Banffshire Steam Shipping Co., she was intercepted by the German submarine UC-47 on February 7, 1917. A single torpedo was enough to send the small steamer to the bottom, one of the thousands of merchant ships lost during the conflict.

This wreck, identified as possibly being the Boyne Castle, lies at a depth of 48 meters. This makes it more accessible to experienced deep air and nitrox divers than other, deeper WWI wrecks in the area. The vessel is broken but offers a fascinating exploration. Divers can investigate the ship's machinery, including its prominent boiler and engine block, which provide a focal point for the dive. The surrounding debris field holds clues to its cargo and its violent end, making it a compelling dive into a key moment in maritime history.