Batticaloa Coast - HMS Hermes

The world's first purpose-built aircraft carrier. 53 metres down. 307 men were lost here on 9 April 1942.

HMS Hermes was sunk by 70 Japanese dive bombers in just 10 minutes on 9 April 1942. 307 men were lost. The world's first purpose-designed aircraft carrier --- 182 metres long --- lies on its port side at 53 metres, covered in dense black coral trees. The 4-inch AA gun still points skyward. It is a British War Grave. Penetration is strictly prohibited. Technical diving certification and mixed gas (nitrox or trimix) are required. Non-certified guests take a guided reef dive at a shallower nearby site during this session and join the surface support vessel. This is one morning. It requires a full day of preparation and travel. One night.

Experiences at this stop

HMS Hermes --- technical dive (certified only)

Gate open at first light. The dive departs with a Sri Lanka Navy-approved technical operator. The hull rests on its port side --- one of the largest WWII wrecks in the Indian Ocean. The starboard propeller is clearly visible. The AA gun, identifiable and pointing skyward, as if still on watch. Black coral trees cover the steel work. Safe access requires advanced narcosis control and strict adherence to mandatory decompression schedules.

Non-technical divers --- supported reef dive

A guided reef dive at an accessible nearby site runs simultaneously for guests without technical certification. The surface boat connects both groups. Non-divers can snorkel or remain aboard.

Historical briefing --- the day in context

Your Ophiro guide provides a full briefing on the events of 9 April 1942 before departure. The Japanese carrier force that attacked HMS Hermes was the same one that had attacked Pearl Harbor. Understanding what you are diving before you enter the water is part of the experience.