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Castletown harbour

Position: Lat 54 03.5 N Lon 04 38.6 W

CastletownCastletown is a heritage harbour consisting of outer and inner drying harbours. It is mainly used by inshore fishing vessels, local and visiting pleasure craft and occasional coasters.

Commercial limits cargo work is only accommodated in the inner harbour through a narrow swing bridge. The berth at the Umber Quay can accommodate vessels up to the maximum of 55M, beam 8.2M, and 3.5M draft MHWS 2.6 metres MHWN and those prepared to take the hard ground.

There is a lay-by berth on the Irish Quay with Maximum length 55M however there is no breadth restriction here. 3.8M on MHWS and 2.7M on MHWN.

See navigation advice in related links.


  • Berths available
  • Moorings: One white can type mooring buoy is situated 3 cables SE of the Breakwater Head (water depth at least 4M) (seasonal)
  • Anchorage: SE of the Lheeah Rio bell buoy between 13M and 18M of water
  • Slipway:There are 3 half tide slipways.

On approach it is important to pass the red Can buoy (Fl.R 3s) which marks the Lheeah rio rocks, to port. The Breakwater Head lighthouse (white tower Red band Oc.R 15s) transit with the Irish Quay lighthouse (white tower red band Oc.R 4s) lead at approx. 323 degrees. It is advisable to pass to the North East of this transit to pass clear of a training wall from the Breakwater Head.


  • Emergency Telephone (available 24 hours)
  • Fresh water
  • 220-250V
  • AC Showers and toilets
  • Waste bins (contact harbour office for disposal of oil)
  • Petrol, diesel and gas from local garages
  • Chandler and marine engineer 1 mile
  • Waste - bins are available on quay and Harbour Yard – contact Harbour Office for other waste

Town amenities:

  • Banks
  • Shops
  • Restaurants
  • Post Office
  • Hotel accommodation

Harbour Office opening hours:

Currently unmanned. Please contact Port St Mary Harbour Office:

Harbour Keeper: Mr Neil Collister & Mr Chris Callow

Port St Mary Harbour Office

Alfred Pier

Port St Mary


Telephone:+44 1624 833205, Mobile (Southern Duty Officer): +44 7624 451503

Email:Send Email


Harbour Keeper: Mr Neil Collister & Mr Chris Callow

Castletown Harbour Office

The Quay



Telephone:+44 1624 833205, Mobile (Southern duty officer): +44 7624 451503

Email:Send Email

out of hours contact:

Marine Operations Centre

Telephone: +44 1624 686612 (24 hour)

Email:Send Email

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