Anchor handling tug operations pdf

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The ROV is operating a subsea torque spanner tool on a valve on the subsea structure. Anchor Handling Tug Supply (AHTS) vessels are mainly built to handle anchors for oil rigs, tow them to location, and use them to secure the rigs in place. AHTS vessels sometimes also serve as Emergency Response and Rescue Vessels (ERRVs) and as supply transports. Anchor Handling. Equipment Anchor Handling Anchor handling involves a number of special marine operations. The high tensions experienced in chains and wires may cause high heeling moments and may cause high transverse and/or astern movements of the anchor handling vessel. The vessels motion through the water may also be affected by high hauling speed on the anchor handling winch or as result SHIP HANDLING — DOKMAR. This is one of the best titles available today on ship handling. There are three major parts in this volume. In the first part, the essential features of the vessel are described together with the main maneuvering methods in use. The second part is devoted to the forces influencing the vessel movement and requiring Ship design. Anchor Handling Tug Supply. Our AHTS designs are characterized by a hull and an engine/propulsion system configuration that secure maximized bollard pull as well as fuel efficient operations. Flexible cargo capacity is ensured by cargo systems and tank arrangements suited for the customer's requirements. Anchor Deployment AHTS sails to the drop anchor point, and then slowly pays out the mooring line to drop the anchor into the target box.Target box is a small area around target point where anchors are supposed to be installed. Mooring Line Deployment and Pull Test AHTS sails forward and deploy the mooring line along the designed corridor. After mooring chain and mooring wire are deployed, connect the towing wire to mooring wire and continue sailing forward to pay out the towing wire to a 2.2 operational planning - anchorhandling 2.2.1 make an anchor handling operations plan in accordance with legislation, industry standards, charterer aht procedures and company procedures, considering expected local conditions and the scope of work i • 2.2.2 verify if the vessel, if involved in tandem-operation, is able to handle the total load … The OOW will manage an anchor handling and towing operation on board, including planning and preparation, ship management, bridge watchkeeping and shiphandling. No distinction was made between Watchkeeping Officer and Master. Dynamic positioning (Joystick-mode) is considered an integral part of the competencies of the person acting as OOW. It is not specifically addressed in this standard but covered in the standard DNVGL-ST-0023 lassification LR + 100 A1 Tug Unrestricted Service LM IMO Number 9260328 MMSI Number 357614000 Operation World wide Maximum Speed About 13 knots DIMENSIONS Gross Tonnage 625 Net Tonnage 187 Deadweight 679 mt Length Overall 40.75 m readth Moulded 11.22 m Depth to Main Deck 4.90 m Draft 4.30 m Freeboard Max Draft 0.6 m TANK APA ITIES Anchor handling tug supply vessel, hereafter it is called AHTS, is one of the main