Document ID: chunk:federal_register_of_legislation:F2018L01173:body:0:p109
Version: federal_register_of_legislation:F2018L01173
Segment Type: other
Provision Reference: 
Character Range: 282189–284885

the anchor in the swell or some other unforeseen circumstance.

Chasers

It is preferable for chain chasing operations that the chaser wire be one continuous length. This reduces the hazards associated with numerous shackles and sockets on the winch drum while recovering anchors.

The chaser wire should be the same size as the work wire normally used on the vessel and long enough for there to be at least one full wrap on the drum when it is paid out to its full working length for the water depth.

Pipelines, Sub-Sea Obstructions/Structures

All personnel involved must have full details regarding the location of pipelines and sub-sea obstructions/structures relating to the whole operation.

Where it is known that anchor handling and/or towing operations will be conducted near pipelines or sub-sea obstructions/structures, then full written procedures should be agreed by all parties.

Winch Drum Visibility

On all anchor handling vessels the winch driver must have a clear view of the winch drum that is being operated. The person in command should also have a clear view of the drum. Both the person in command and winch driver should have a clear view of the working deck.

On vessels where there are video cameras installed to provide a view of the winch drum, these and the associated lighting must be positioned to give the best view possible. The video system should be maintained so that the winch driver always has a clear view of the drum.

In an emergency or system breakdown it may be necessary to operate the winches using a crew member as an observer at the drum using a radio or hand signals to communicate direct to the winch driver. If this is necessary the observer should be positioned to eliminate or minimise any risks from the winch or the equipment being wound on/off. Hand signals should be agreed prior to the operation and all personnel fully briefed on the requirements.

Chain Chasing

This operation should be performed using the recommended amount of wire for the depth of water and using the methods recommended by the manufacturer.

To avoid picking up bights of chain/wire with consequent overloading of the gear, tension should be maintained by the installation on the anchor chain/wire until the vessel has run the full distance and is ready to commence heaving.

To avoid overloading of the equipment, the vessel should be kept directly over the line of the anchor cable while chasing and care should be taken not to use excessive amounts of power on the vessel's propulsion.

The crew should be off the deck and in a protected location during chasing operations.

Grappling

Care should be taken deploying grapples and 'J' hooks over the stern.