ATLANTIC SUN (POSSIBLY)

Protected Area

Gruinart Flats, Islay

Why dive here

With 112+ marine species recorded in the area - including blue whales, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - ATLANTIC SUN (POSSIBLY) offers some of Scottish West Coast's richest wreck diving.

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

CharacterWreck dive · max 53m

StandoutRich in charismatic marine life

The ATLANTIC SUN, sitting deep on the Scottish West Coast, is one of those wrecks that really gets under your skin. We love it because it’s a proper expedition, a serious dive for experienced wreck heads. Dropping down to 53 metres, you immediately feel the history; this isn't some broken-up debris field. She’s a steamship, torpedoed in 1918 by U-46, en route from Philadelphia to Liverpool, and you can sense that wartime drama. Visibility here can be a bit of a gamble, but when it’s good, it’s spectacular. We’ve had dives where you can make out the entire bow section from twenty metres away, a dark silhouette rising from the seabed. Our favourite part is exploring the midships, where the deck plating has started to peel back, creating fantastic overhangs and little caves. Conger eels are often coiled up in the machinery, and we've seen ling the size of small sharks patrolling the deeper sections of the hull. It’s a dark, atmospheric dive, often with a decent current, so plan your gas and deco carefully. For us, the ATLANTIC SUN is about connecting with that raw, industrial past, lying silent and still beneath the waves.

Typical ATLANTIC SUN (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 53m 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.

Today06:5117:4010h 49m daylightGolden hour 16:49

ATLANTIC SUN (POSSIBLY) Wreck History

Year Sunk

1918

Vessel Type

cargo ship

Cause

torpedo

Resting in the deep, cold waters off the Scottish West Coast, the steamship tentatively identified as the Atlantic Sun is a casualty of the First World War. In March 1918, during the height of Germany's unrestricted submarine warfare campaign, she was on a critical transatlantic passage from Philadelphia to Liverpool, likely laden with supplies for the war effort. Her journey was cut short when she was intercepted and torpedoed by the German U-boat U-46.

Today, the wreck lies at a depth of 53 metres, placing it firmly in the realm of technical diving. Divers who make the descent are rewarded with a haunting glimpse into history. The vessel is a substantial size, and while over a century of immersion has taken its toll, key features of the early 20th-century steamship remain. Exploring this wreck is a somber reminder of the naval conflict that reached even these remote Scottish waters.