Ennerdale Wreck
Location guideMahé

Ennerdale Wreck

2230 madvanced+wreckslarge pelagics○ Out of season

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Overview

Royal Fleet Auxiliary tanker, 211 meters long, lost on 1 June 1970 when she struck uncharted granite pinnacles off Mammelles Islet at 07:37 local time. With her engine room flooding and fuel oil pouring into the Indian Ocean, Royal Navy divers placed scuttling charges and helicopters lifted them clear seconds before detonation, sinking her on the spot to keep the slick off Mahé. The hull broke into large sections that lie in 24 to 30 meters across white sand, bow and stern still recognisable. Around the kingposts and inside the open holds you find resident giant moray eels, schools of oriental sweetlips and yellow snapper packed under overhangs, batfish drifting in pairs, eagle rays cruising past, and the occasional tawny nurse shark on the sand. The largest wreck in Seychelles waters.

Briefing note

Deep dive on a fragmented wreck. PADI Deep Diver or equivalent certification expected, and most operators want 30 plus logged dives. Nitrox extends bottom time. The site is exposed and the run out can be rough in the southeast monsoon (May to September), so trips often cancel last minute in those months. Penetration of the broken sections is not recommended due to collapsed plating and sharp steel. Nearest hyperbaric chamber is at Seychelles Hospital in Victoria.

What you'll see

7 species curated
  • Giant moray
    year-round
    Peak: Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec
  • Oriental sweetlips
    year-round
    Peak: Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec
  • Bluestripe snapper
    year-round
    Peak: Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec
  • Batfish
    year-round
    Peak: Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec
  • Spotted eagle ray
    year-round
    Peak: Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec
  • Tawny nurse shark
    seasonal
    Peak: Mar · Apr · May · Oct · Nov · Dec
  • Yellowmargin scorpionfish
    year-round
    Peak: Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec

Conditions

MonthWaterVisibilityCurrent
Jan2830 °C2030 mmild
Feb2830 °C2030 mmild
Mar2830 °C2540 mmild
Apr2830 °C2540 mmild
May2729 °C1525 mmoderate
Jun2628 °C1020 mmoderate
Jul2527 °C1020 mstrong
Aug2527 °C1020 mstrong
Sep2628 °C1525 mmoderate
Oct2729 °C2030 mmild
Nov2830 °C2540 mmild
Dec2830 °C2540 mmild

Season calendar

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Peak season highlighted · current month outlined

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