29m
    Northumberland & Northeast, United Kingdom
    Aberffraw Bay

    SEGONTIUM (SIRGONTIUM)

    Protected Area

    Aberffraw Bay

    Why dive here

    With 118+ marine species recorded in the area - including dolphins, dwarf minke whales, humpback whales, ocean sunfish (mola mola) and orcas - SEGONTIUM (SIRGONTIUM) offers some of Northumberland & Northeast's richest wreck diving.

    Marine lifeDolphins, Dwarf Minke Whales, Humpback Whales, Ocean Sunfish (Mola Mola) and Orcas · 118+ species recorded
    CharacterWreck dive · max 29m
    StandoutRich in charismatic marine life

    Segontium, often referred to as Sirgontium by the locals, is one of those wrecks we’ve returned to time and again. It’s a fishing vessel, 30.5 metres long, sitting upright at 29 metres. She went down in 1984, so she’s had plenty of time for the ocean to reclaim her. We love how intact the structure remains, considering the often-turbulent Northumberland waters. You can still make out the wheelhouse, the hold, and even parts of the deck machinery, all encrusted with dense plumose anemones, their white tentacles swaying gently in the subtle current. Dropping down, the visibility can be a bit hit or miss, but when it’s good, the sheer density of life here is impressive. Ling often lurk in the shadowed corners of the hold, and conger eels peer out from beneath collapsed sections of plating. Our favourite spot is exploring the stern, where you’ll find huge clusters of dead man's fingers coral and, if you’re lucky, a curious grey seal might make a fleeting appearance. It’s a fantastic dive for experienced wreck enthusiasts who appreciate a historical vessel colonised by thriving marine life. The Segontium might not have the dramatic history of a battleship, but its character and the life it now supports make it a truly rewarding dive.

    Typical SEGONTIUM (SIRGONTIUM) Dive Profile

    10m20m30mSafety Stop0m29m max~30 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

    Depth of 29m - Advanced Open Water certification recommended.

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:3717:3410h 56m daylightGolden hour 16:47

    Nearest Dive Centres to SEGONTIUM (SIRGONTIUM)

    Dive shops near SEGONTIUM (SIRGONTIUM)

    View all dive centres in Northumberland & Northeast

    Reviews for SEGONTIUM (SIRGONTIUM)

    Sign in to write a review

    Conditions

    Ocean conditions, forecast and tides for SEGONTIUM (SIRGONTIUM)

    Plan & book

    Ways to dive Northumberland & Northeast, from day trips to liveaboards.

    Day trips & courses

    via GetYourGuide

    Guided dives, courses and snorkel trips with instant booking.

    Find dive trips in Northumberland & Northeast

    Places to stay

    via Booking.com

    Hotels and dive resorts near Northumberland & Northeast.

    Search stays in Northumberland & Northeast

    Dive insurance

    Most travel insurance excludes or limits scuba. Check what you need before you go.

    Dive insurance explained

    Partner links: we may earn a commission if you book, at no extra cost to you. How we make money

    Where to Stay near SEGONTIUM (SIRGONTIUM)

    Prices from Booking.com. We may earn a commission at no extra cost to you.

    Back to Northumberland & Northeast