HMSM TANTIVY
Protected Area
Moray Firth
Why dive here
With 140+ marine species recorded in the area - including blue whales, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - HMSM TANTIVY offers some of Scapa Flow, Orkney's richest wreck diving. Water ranges 8-14°C, warmest July, August, September.
The HMSM Tantivy, a T-class submarine scuttled in 1951, offers a different flavour of Scapa Flow wreck diving. Lying at 36 metres, it’s a substantial beast at 77.4 metres long, largely intact and resting on its starboard side. We love that you can really appreciate its shape, the conning tower still identifiable, the hull streaked with anemones and the occasional squat lobster peering from a crevice. Exploration here feels like a journey through time. You’ll fin past open torpedo tubes, their shadows inviting, and the large hatches, though we’d suggest keeping external to appreciate the sheer scale. Visibility can be typical Scapa Flow, a green but often bright 10-15 metres, which really allows the Tantivy to emerge from the murk. It’s a dive for those who appreciate military history and a good, solid wreck that tells its own story without needing to be penetrated.
Typical HMSM TANTIVY Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Deep dive (36m) - monitor air consumption closely. Advanced certification recommended.
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.
Always perform a 3-minute safety stop at 5m before surfacing.
Reviews for HMSM TANTIVY
Conditions
Ocean conditions, forecast and tides for HMSM TANTIVY
HMSM TANTIVY Ocean Conditions
Monthly averages for HMSM TANTIVY, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (58.64, -3.16) (8km away)
October Averages
Sea Temperature
13°C
55°F · Range: 11.4–13.8°C
Air Temperature
10°C
50°F
Wind Speed
9.26 m/s
18.0 knots
Atmospheric Pressure
1005.3 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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