Anchor Handling Tug Supply (AHTS) Vessel – 7,300 BHP | 85.1 T Bollard Pull | DP2 | Fi-Fi 1

This modern Anchor Handling Tug Supply (AHTS) vessel was built in 2010 by Zhengjiang Shipbuilding Co. Ltd., Ningbo, China, and is classed by ABS with the following notations:

ABS Class: A1, Towing Vessel, Fire Fighting Vessel Class 1 (Fi-Fi 1), Offshore Support Vessel, AH, AMS, DPS-2.

Designed for demanding offshore operations, the vessel combines powerful anchor handling capability, advanced dynamic positioning, and extensive cargo carrying capacity, making her suitable for offshore drilling support, towing, rig moves, subsea operations, and field logistics.

Main Particulars

• Flag / Port of Registry: As applicable
• Keel Laid: 12 January 2009
• Year Built: 20 October 2010
• Builder: Zhengjiang Shipbuilding Co. Ltd., Ningbo, P.R. China
• Classification Society: ABS
• Length Overall (LOA): 59.78 m
• Breadth Moulded: 15.00 m
• Depth Moulded: 5.50 m
• Deadweight (DWT): 1,453 MT
• Open Deck Area: 331 m²
• Deck Loading Capacity: 5 MT/m²

Propulsion & Power

The vessel is powered by a diesel-electric propulsion system delivering approximately 7,300 BHP, providing excellent fuel efficiency, operational flexibility, and high maneuverability.

• Main Engines: 3 × 1,825 kW
• Main Propulsion: 3 × 1,685 kW Z-Drive azimuth thrusters with fixed-pitch, variable-speed propellers
• Bow Thrusters: 2 × 560 kW
• Emergency/Harbour Generator: 180 kW
• Certified Bollard Pull: 85.01 tonnes (2021 test)

The triple Z-drive configuration provides exceptional maneuverability and precise vessel control during anchor handling, towing, and offshore support operations.

Dynamic Positioning (DP2)

The vessel is fitted with an ABS Classed DPS-2 Dynamic Positioning System, enabling safe and accurate station keeping during offshore operations.

The DP2 system includes:

• Dual DGPS receivers
• CyScan positioning system
• Laser Reference Unit
• Independent joystick control
• Fully redundant sensors and monitoring systems compliant with DP Class II requirements

This configuration ensures reliable positioning even in the event of equipment failure, making the vessel suitable for operations alongside offshore platforms and subsea installations.

Cargo & Tank Capacities

The vessel offers substantial liquid and dry cargo capacities for offshore supply missions.

Tank Capacities

• Mud / Brine / RO Water: 651.44 m³
• Dry Bulk / Cement: 156 m³
• Foam: 14.5 m³

Cargo Transfer Pumps

Efficient pumping systems allow rapid transfer of offshore cargoes.

• Fuel Oil Pump: 150 m³/hr @ 60 m head
• Drill Water / Ballast Pump: 150 m³/hr @ 70 m head
• Liquid Mud Pumps: 2 × 150 m³/hr @ 70 m head

Anchor Handling & Deck Machinery

The vessel is equipped with heavy-duty deck machinery suitable for deepwater anchor handling and towing operations.

Main Anchor Handling / Towing Winch

Electro-hydraulic high-pressure winch featuring:

• Two waterfall drums
• Drum Size: 900/2,250 mm diameter × 1,800 mm length
• Wire Capacity: 1,500 m of 2-inch steel wire
• Rated Pull: 150 tonnes on first layer
• Brake Holding Capacity: 250 tonnes
• Twin cable lifters for 2½" and 3" anchor chains

Additional deck equipment includes:

• Stern Roller: 1,500 mm × 2,500 mm
• Storage Reel:
  • Capacity: 1,500 m of 2-inch wire
• Windlass: 1 unit
• Tugger Winches: 2 × 10 tonnes
• Deck Crane: 1.8 tonnes @ 6 m outreach

This deck arrangement enables safe and efficient anchor deployment, recovery, towing, and offshore construction support.

Navigation & Communication

The vessel is equipped with modern navigation and communication systems for worldwide offshore operations.

Navigation equipment includes:

• Two Marine Radar systems
• GMDSS A3 compliant radio installation

Communication systems comprise:

• VSAT
• Inmarsat Fleet 77
• Iridium satellite communications
• Email and IP Voice communication facilities

These systems provide reliable communications in remote offshore environments.

Fire Fighting Capability (Fi-Fi 1)

The vessel is fitted with a Fire Fighting Class 1 (Fi-Fi 1) system capable of supporting offshore emergency response.

Equipment includes:

• Two fire pumps each rated at 1,500 m³/hour
• Two remotely operated fire monitors each rated at 1,200 m³/hour
• Water spray self-protection system

The Fi-Fi system enables effective firefighting support for offshore installations and vessels.

Accommodation

Accommodation is provided for vessel crew and offshore personnel in comfortable air-conditioned cabins.

Cabin arrangement includes:

• 4 × Single cabins
• 4 × Twin cabins
• 2 × Four-berth cabins

Additional facilities include:

• Mess room
• Day room/lounge
• Galley
• Hospital
• Laundry
• Office
• Dry stores and provision storage

The accommodation layout is suitable for extended offshore deployments.

Safety Equipment

The vessel complies with international safety requirements and is equipped with comprehensive lifesaving and emergency response equipment, including:

• SOLAS-compliant lifesaving appliances
• MOB (Man Overboard) rescue boat with launching davit
• Standby rescue equipment
• Complete firefighting systems
• Water spray protection
• Emergency communication systems
• Life-saving arrangements in accordance with class and flag state requirements