PONTOON NO 1
Protected Area
Hoy
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) - PONTOON NO 1 offers some of Scapa Flow, Orkney's richest wreck diving. Water ranges 8-14°C, warmest July, August, September.
Pontoon No. 1 in Scapa Flow isn't one of the grand battleships, but we absolutely love it for a completely different reason. It’s shallow, sitting at a max of 10 metres, making it perfect for a long, relaxed dive, even if you’re newer to cold water wreck diving. You’re essentially exploring a large, metal box, but it’s the sheer density of life that makes it so compelling. The pontoon acts like a giant, artificial reef. Expect to find conger eels peering from every dark crevice, their heads the size of your forearm. We’ve often seen blennies darting in and out of the small holes, completely unfazed by divers. Our favourite discovery here is the sheer number of colourful anemones that encrust the structure – a vibrant contrast to the stark metal. Visibility here can be surprisingly good on a calm day, especially with a bit of sunshine. We’d suggest going at slack water, as even a gentle current can kick up the fine sediment. It's a fantastic site for photographers looking for macro life on a larger structure, or anyone who just wants a chill dive in a historic location without the pressure of deeper, darker wrecks.
Typical PONTOON NO 1 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.
Nearest Dive Centres to PONTOON NO 1
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Conditions
Ocean conditions, forecast and tides for PONTOON NO 1
PONTOON NO 1 Ocean Conditions
Monthly averages for PONTOON NO 1, 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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