HMS ST OLAVES
Protected Area
John o' Groats
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) - HMS ST OLAVES offers some of Scapa Flow, Orkney's richest wreck diving. Water ranges 8-14°C, warmest July, August, September.
The HMS St Olaves in Scapa Flow isn't just any old tug; she’s a wonderfully accessible piece of history. Lying upright at a comfortable 14 metres, she makes for a fantastic second dive or a real treat for those new to wreck diving. We love slipping down the shotline and seeing her come into view, her silhouette softened by decades on the seabed. Her triple-expansion engine is still very much intact, a monumental piece of machinery that dominates the stern section. You can peer into the cylinders, imagining the steam pushing pistons, a real tangible link to her working life. The two massive boilers forward of the engine room are also impressive, often shrouded in a shimmering curtain of small pollock. Look closely, and you’ll spot wrasse darting in and out of the plating and the occasional inquisitive conger eel peeking from a darkened recess. We’d suggest exploring the bow first, then making your way aft along the deck, taking time to really absorb the scale of the engine. There’s a quiet beauty to her, a sense of sturdy resilience even in her broken state. This is a genuinely engaging dive for anyone who appreciates the character of a working vessel.
Typical HMS ST OLAVES Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
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.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to HMS ST OLAVES
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Conditions
Ocean conditions, forecast and tides for HMS ST OLAVES
HMS ST OLAVES Ocean Conditions
Monthly averages for HMS ST OLAVES, 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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