HMS INSOLENT
Protected Area
Portsmouth Harbour
Why dive here
With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - HMS INSOLENT offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The HMS Insolent, a gunboat with a name that always makes us chuckle, lies in Portsmouth Harbour. It’s not a deep dive by any stretch, a mere meter at most, which makes it perfect for a snorkel or a shallow exploration on a calm day. We love that it’s so accessible, right there in the harbour, feeling a bit like a forgotten secret amidst the bustling activity. What you'll find is the skeletal remains of a vessel, surprisingly intact for something that’s been down since 1922 and then relocated. The metalwork is encrusted with barnacles, a rough, textured skin, and we often spot small crabs scuttling amongst the plates. Shoals of tiny fish, sometimes mullet, often hover over the structure, darting away as you approach. It’s not a site for grand coral vistas, obviously, but for a glimpse into history, a peek at the tenacious life adapting to an artificial reef in an urban setting, it's our favourite. You can trace its length, imagining its past life, while above, the modern world goes on.
Typical HMS INSOLENT 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.
Nearest Dive Centres to HMS INSOLENT
Dive shops near HMS INSOLENT
In2 Diving
Andark Diving
Sussex Diving & Leisure
Mulberry Marine Experiences CIC
Sunken Dreams Scuba Diving Academy
Abyss Scuba School
Reviews for HMS INSOLENT
Conditions
Ocean conditions, forecast and tides for HMS INSOLENT
HMS INSOLENT Ocean Conditions
Monthly averages for HMS INSOLENT, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)
October Averages
Sea Temperature
17°C
62°F · Range: 15.1–17.5°C
Air Temperature
13°C
56°F
Wind Speed
8.14 m/s
15.8 knots
Atmospheric Pressure
1011 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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