MV Claymore

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MV Claymore
MV Claymore
Career (Denmark) File:Flag of Denmark.svg
Name: MV Sia
Owner: CT Offshore
Acquired: March 2009
In service: 2010
Homeport: Svendborg

MMSI: 219013938[1]

Call Sign:OWFI2
Status: awaiting service
Career (UK) Civil Ensign of the United Kingdom.svg
Name: MV Claymore

December 1978 – May 1997: Caledonian MacBrayne
May 1997 – 1999: Argyll & Antrim Steam Packet Co
1999 – 2002: Sea Containers

October 2002 – March 2009: Pentland Ferries
Operator: 13 May 2000 – 23 June 2000: Strandfaraskip Landsins, Tórshavn, Faroe Islands (on charter)
Port of registry: Glasgow

March 1979 – 1989 ObanBarra / Lochboisdale
1989 – 1993: KennacraigIslay
1997 – 2000: CampbeltownBallycastle

October 2002 – March 2009: Gills BaySt. Margaret's Hope
Builder: Robb Caledon, Leith
Yard number: 522[2]
Launched: 31 August 1978
Sponsored by: Lady Kirkhill
In service: 1 March 1979
Identification: IMO number: 7715434[3]

MMSI Number: 235009221

Callsign: GYAE
General characteristics
Type: Steel Double Screw Motor Vessel
Tonnage: 1,631 GT
Length: 230 feet (70.1 m)
Beam: 51 feet (15.5 m)
Draft: 16 feet (4.9 m)
Propulsion: Mirrlees Blackstone Diesels
Speed: 15 kts
Capacity: 500 passengers, 50 cars

MV Claymore is a ro-ro ferry built in 1978 for Caledonian MacBrayne. Between October 2002 and March 2009 she was owned by Pentland Ferries and operated as relief vessel on the Short Sea Crossing to Orkney. Since March 2009 she has been owned by CT Offshore in Denmark and is now known as MV Sia.


MV Claymore was built by Robb Caledon, Leith and launched on 31 August 1978.[4] The third ferry to bear the name Claymore, she entered service between Oban and the Outer Isles.

She was out of service for the three months in 1982 after running into rocks at the entrance to Lochboisdale harbour.[5] A collision in 1986 resulted in significant bow damage. She performed the annual Govan Shipbuilders charter with a flat plate welded across the damaged area. It was painted black with a large yellow CalMac lion to make it look less odd.[5]

The cafeteria was refurbished in 1997 when sold to Sea Containers.

On 11 March 2003, in gale force winds, Claymore was blown away from her intended berth in St Margaret’s Hope Bay. Her starboard propeller became entangled in the moorings of smaller vessels and the 12 passengers were disembarked safely by the Longhope Lifeboat. The subsequent investigation by the Marine Accident Investigation Branch (MAIB) made several recommendations to improve safety.[6]

March 2009 Claymore was sold to CT Offshore ApS,[7] a Danish shipping company and moved to Svendborg and was renamed Sia on the 29 April 2009.[8] They added 4x 600kW auxiliary engines to supply 4 Forward Thrusters and 3 Aft Thrusters, giving dynamic positioning capability for her new role cable-laying.[9]


Claymore is a larger half-sister to MV Pioneer, built by the same shipyard.[4] She has four decks of accommodation including saloons, bars and cabins for 32 passengers. The ticket office is forward of the car deck. The cafeteria is above the lounge bar, reached by two sets of stairs outside the bar. The toilets are next to these stairs. She has a 36 ton hoist and room for 50 cars loaded via a stern ramp and the hoist that was removed in December 2007.[5]


Claymore entered service on the Outer Isles route from Oban. She remained on this route for ten years, sailing to Barra and Lochboisdale. She made calls at Tobermory, Lochaline on the Morvern coastline, and Coll and Tiree on alternate days. Claymore was transferred to the Kennacraig - Islay service in 1989, and in 1993 became CalMac's spare summer vessel.[4] During the summer of 1993 she was on the Clyde, seeing service at Rothesay, Dunoon and Brodick. In 1994 and 1995 Claymore provided weekend voyages to Douglas, Isle of Man. For this service she was given an International Passenger Certificate for 300. She was the first vessel to use hoist loading on the Isle of Man. In September 1995 Claymore became the first CalMac vessel to visit Wales, under charter to the Hamilton Oil Company. She became probably the most travelled member of the CalMac fleet, visiting twenty-four terminals in total in 1996, her last full year with the company.[4]

In May 1997 Claymore was sold to Argyll and Antrim Steam Packet Company, a subsidiary of Sea Containers Scotland Ltd. For three years Claymore operated a new summer sailing from Campbeltown to Ballycastle, Northern Ireland, providing winter overhaul relief for CalMac under charter. On termination of the Ballycastle service, she was moved to Birkenhead and put on the market. She carried out a five-week charter to the Faroe Islands in June 2000.[4]

Andrew Banks of Pentland Ferries bought Claymore for the service between St Margaret's Hope, Orkney and Gills Bay, Caithness in October 2002, where she joined the former CalMac vessel, Iona, since re-named MV Pentalina-B. On occasions her passengers numbers were limited to twelve.[4]

During the summer of 2006 she was employed on short-term charter as a livestock carrier between Dover and Calais.[10]

CT Offshore list her as a RORO Supply Vessel with dynamic positioning.[9]


External links