HMT JASPER
Protected Area
Long Berry Coast
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) - HMT JASPER offers some of Scapa Flow, Orkney's richest wreck diving. Water ranges 8-14°C, warmest July, August, September.
The HMT Jasper sits deep in Scapa Flow, a trawler-turned-minesweeper that met its end during wartime. At 58 metres, this is one for the technical diver, and honestly, a site we think is often overlooked for its bigger, more famous neighbours. She's a smaller wreck, just over 30 metres long, but what she lacks in size, she makes up for in atmosphere. We love descending onto her deck, where the visibility often holds a green hue, making the structure appear out of the gloom. Her triple-expansion engine is still very much in place, a solid chunk of metal standing proud, and you can swim through areas of the superstructure. It's a real hands-on wreck, not just something to circle. Look closely and you'll spot dead man’s fingers clinging to the metalwork, and the occasional ling or large cod sheltering inside. The lack of current down here usually means a peaceful dive, allowing you to really take your time exploring the details. It's an honest piece of history, and for us, a truly rewarding dive for experienced cold-water wreck enthusiasts. Just be mindful of your bottom time at this depth.
Typical HMT JASPER 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 58m 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.
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 HMT JASPER
Conditions
Ocean conditions, forecast and tides for HMT JASPER
HMT JASPER Ocean Conditions
Monthly averages for HMT JASPER, 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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