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Map of City of Winchester Wreck (Hallaniyat Islands)
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City of Winchester Wreck (Hallaniyat Islands)

Dhofar, Oman
AOW suggested18–30 m depthBoat entry5mm wetsuit typical

Boat dive — see Entry & access.

City of Winchester Wreck (Hallaniyat Islands) at a glance

City of Winchester Wreck (Hallaniyat Islands) is a advanced boat dive site in Dhofar, Oman with depths of 18–30 m (59–98 ft). Typically most favorable Nov · from 3 years of archive data. Divers commonly see Barracuda, Longfin batfish, and Bigeye trevally (jacks). Recent reports put the water around 19°C (66°F). Check the latest conditions and entry details before you go.

Marine model · graded 4h ago
3.3 mwaves — about three and a half meters expected

Tap a factor for its source and model point · Forecast 19°C · seasonal avg 22°C

Site hazards: Very remote (liveaboard-only, far from any recompression chamber); exposed open-ocean conditions and swell; current; wreck snag/entanglement hazards; seasonal access only.

Read the full hazards ↓

Dive windows this week

No dive windows in this week’s forecast — no stretch of daylight hours scored favorable or moderate for this site.

First light 1:29 · Sunrise 1:53 · Sunset 14:51

Source: Open-Meteo marine · model point 7.4 km from site · graded 4h ago

Forecast only — always assess conditions on site.

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

What Divers Say

Known for: Barracuda, Longfin batfish, Bigeye trevally (jacks)
Best time: Roughly November to May (liveaboard season); cooler months bring whale sharks and humpback whale activity in the region.

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. Jan95%25°C0.8 m
  2. Feb99%25°C0.7 m
  3. Mar91%27°C0.8 m
  4. Apr76%27°C1.1 m
  5. May42%28°C1.5 m
  6. Jun4%25°C3.0 m
  7. Jul0%22°C3.9 m
  8. Aug0%22°C3.3 m
  9. Sep20%25°C2.1 m
  10. Oct81%27°C1.0 m
  11. Nov100%28°C0.7 m
  12. Dec86%26°C0.9 m

November hastypically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life seen at this site

Species noted at this site — not a promise of what you’ll encounter.

Species seen here

  • BarracudaCommonly seen
  • Longfin batfishCommonly seen
  • Bigeye trevally (jacks)Commonly seen
  • Mobula rayCommonly seen
  • Honeycomb morayCommonly seen
  • Green turtleOccasionally seen
  • Whale sharkSeasonal
  • Arabian Sea humpback whaleSeasonal

Fills & rentals nearby

No dive shops mapped within 25 km. Know one? Add it to the map.

Site details

A large historic wreck lying off Al-Hallaniyah in the remote Hallaniyat (Khuriya Muriya) Islands, the first British merchant ship sunk in WWI, now resting at roughly 20-30 m. The broken hull is smothered in fish, with barracuda, batfish, jacks, rays and mobulas regularly swarming the structure in clear, nutrient-rich Indian Ocean water. The islands are reached only by liveaboard out of Mirbat near Salalah and are dived seasonally, with the wider area famous for non-migratory Arabian Sea humpback whales and cold-season whale sharks. This is a remote, advanced destination far from any support.

boatreefwreck

Very remote (liveaboard-only, far from any recompression chamber); exposed open-ocean conditions and swell; current; wreck snag/entanglement hazards; seasonal access only.

Reviews

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