Category Archives: AHTS
Anchor Handling Tug Supply (AHTS) vessels are mainly built to handle anchors foroil rigs, tow them to location, anchor them up and, in a few cases, serve as an Emergency Rescue and Recovery Vessel (ERRV).
AHTS vessels differ from Platform supply vessels (PSVs) in being fitted with winches for towing and anchor handling, having an open stern to allow the decking of anchors, and having more power to increase the bollard pull. The machinery is specifically designed for anchor handling operations. They also have arrangements for quick anchor release, which is operable from the bridge or other normally manned location in direct communication with the bridge. The reference load used in the design and testing of the towing winch is twice the static bollard pull.
Rolls-Royce has been awarded a £19m contract to deliver deck machinery for four ocean going tugs, designed by Ulstein Design & Solutions, for Dutch company ALP Maritime Services.
The vessels will be constructed in Japan by Niigata Shipbuilding & Repair.
The vessels are being developed for towing large structures like oil rigs and floating production units over long distances. The bollard pull for each of the four vessels will be 300 tons and they will be equipped for anchor handling.
John Knudsen, Rolls-Royce, President Offshore, said: “This project is a good example of how our solid industry know-how makes us a partner of choice for innovative ship owners and design teams. The new vessels will place ALP Maritime Services in the elite division for large offshore towing operations across the world.”
The deck machinery delivered from Rolls-Royce will include a complete low pressure winch solution and a stern roller. The towing/anchor handling winches are specially developed in cooperation with the ship designer and owner. The supply of rudder and steering gear is also included in the Rolls-Royce scope.
Intended for world-wide operations, the vessels will be delivered from Japan by Q1 2016. They will be of Ulstein design SX157, developed especially for this project.
Tore Ulstein, Ulstein Group, Deputy CEO, said: “This is a very important contract involving activities in a new market for us and with a new customer. The contract is a result of close cooperation with the shipyard, the ship owner and our partners in the Norwegian maritime cluster, a cooperation we will work to develop further in the years to come.”
Viking Supply Ships, one of TransAtlantic’s two business areas, has with the AHTS-vessel Magne Viking been awarded a term contract by Chevron Canada Ltd for operations on one well.
The contract is on subject and is not yet fully signed by the parties. The well support operations are estimated to last between 150 and 180 days and the charter will commence during the third quarter 2012. The vessel is going to support the drill ship Stena Carron with supply duties, anchor handling, towing, stand-by and rescue services, passenger movement and ice berg management.
Magne Viking is especially designed for subarctic operations and harsh weather conditions. The crew on board is especially trained for working in cold environments and has extensive experience from iceberg management from Greenland. The vessel is ice classed, which is a requirement for operating in Canadian waters, and will be upgraded to a full stand-by class in accordance with Canadian regulations. Magne Viking is furthermore equipped with de-icing systems, fire-fighting, oil recovery, large accommodation and safe deck handling.
The total contract value is estimated at about CAD 11.1 million.
- Viking Supply Ships Wins Contract by Chevron Canada (worldmaritimenews.com)
- Norway: Lunding Charters LNG Powered Supply Vessel ‘Viking Prince’ (mb50.wordpress.com)
- Viking Supply Ships Extends Contract for Vessel Vidar Viking for Work in Russia (worldmaritimenews.com)
- UK: Rolls-Royce Equipment for Iceman AHTS (mb50.wordpress.com)
- India: Cochin Shipyard Delivers New AHTS to SCI (mb50.wordpress.com)
Cochin Shipyard Limited (CSL) delivered a 120T Bollard pull Anchor Handling Tug Supply Vessel (AHTS), “SCI Kundan”, to M/s Shipping Corporation of India, Mumbai (SCI). This is the Second of the series of 4 Nos of 120T Bollard pull AHTS being built by CSL for M/s Shipping Corporation of India.
The vessel is of AH03 type, designed by STX OSV, Norway (ex- Aker Yards) and is certified under dual class by the Rules and Regulations of American Bureau of Shipping & Indian Register of Shipping and is registered under Indian flag.
This 65.2 x 16.0 Meter vessel is a high end Anchor handler with a capacity of 120 T Bollard pull which is equipped with 2 Nos of 4000 KW Diesel Engines and 2 Nos of Controlled pitch propeller in Kort Nozzles. The vessel is having Grade I Dynamic Positioning feature along with compliance to ERRV class ‘C’ and also having capability of Fire Fighting class I.
The vessel is built to accommodate 29 persons with all the capabilities of a Platform Supply Vessel in addition to the Anchor Handling facility. These vessels are used as support platforms to Rigs/Oil platforms. The shipyard is presently constructing another 4 nos of offshore vessels for M/s Shipping Corporation of India which are all in advanced stages of construction.
- India: Cochin Shipyard Delivers PSV to Norwegian Owner (mb50.wordpress.com)
- STX OSV Adds to their Backlog, DOF ASA Sends Newbuild Order for Subsea Construction Vessel (mb50.wordpress.com)
- MacGregor Systems for New OSVs in Asia and Europe (mb50.wordpress.com)
- Otto Marine Entrenches Deeper into West Africa with 3-year Multi-Million Dollar Contract (gcaptain.com)
Skandi Møgster, built by Kværner Kleven Leirvik in 1998, is an AHTS with 16.000 BHP and 192 T Bollard Pull.
The DOF group operates within three different segments in relation to strategic types of activities and vessel types. The groups technical diversified fleet consists of innovative vessels specialized for their operational purpose.
- DOF Subsea’s Skandi Singapore Bags Gig Offshore New Zealand (mb50.wordpress.com)
- OGX Gets Nod for EWT and Production Development in Campos Basin, Offshore Brazil (mb50.wordpress.com)
- Petrobras Discovers Oil at Tucura Well, Campos Basin, Offshore Brazil (mb50.wordpress.com)
- Norway: DOF Subsea to Provide Offshore Survey & Construction Services to Statoil (mb50.wordpress.com)
- 350-foot specialized diving ship makes stop at Pensacola port (mb50.wordpress.com)
- Westshore Shipbrokers: Ultra-Deepwater, What is Next for the Shipowner? (Brazil) (mb50.wordpress.com)
- Re-inventing subsea intervention to keep economics above water (mb50.wordpress.com)