HMS Seal
Why dive here
With 95+ marine species recorded in the area - including seals & sea lions, sea turtles and jellyfish lake - HMS Seal offers some of North Sea Coast's richest wreck diving. Water ranges 3-19°C, warmest July, August, September.
The HMS Seal isn’t your typical North Sea wreck. It's a submarine, a Grampus-class beauty from 1938, and its story is etched into every riveted plate. We love that it’s still largely intact, sitting upright, with a palpable sense of history. Dropping down, you feel the cold embrace of the North Sea, but the visibility, often surprisingly good here, lets you pick out details – a conning tower, torpedo tubes, even the periscope housing. It’s a dive for those who appreciate engineering and a bit of a challenge. Currents can be tricky, so pick your day carefully, ideally on a slack tide. Inside, if you're qualified and brave enough for proper penetration, the confined spaces are a real experience; outside, the external structure is colonised by anemones and hydroids. Look for the black gobies darting between the metalwork and the common sea stars clinging on. It’s a serious wreck dive, not for beginners, but incredibly rewarding for those who make the journey.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Cold water this month (avg 13°C). Drysuit or thick wetsuit (7mm+) recommended.
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Conditions
Ocean conditions, forecast and tides for HMS Seal
HMS Seal Ocean Conditions
Monthly averages for HMS Seal, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (55.31, 9.86) (1km away)
October Averages
Sea Temperature
13°C
56°F · Range: 10.7–16.8°C
Air Temperature
11°C
52°F
Wind Speed
7.69 m/s
14.9 knots
Atmospheric Pressure
1010.5 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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