Section 1 General

101. Application

1. The requirements in this Chapter apply to Anchor handling towing vessels (hereinafter referred to as "ships" in this Chapter) equipped for the handling of anchors of offshore floating installations or equipped for towing operations.

2. The ships should comply with the requirements of this chapter in addition to Ch 1 to Ch 3.

102. Submission of Data

1. In general, in addition to the plans listed in Ch 2 Sec 2, the following plans and particulars are to be submitted.

2. For Approval

(1) Structural details of supporting structures in way of the anchor handling and towing winches

(2) Structural details of stern roller, towing pins, shark jaw and their supporting structure

(3) Details of stow racks, cargo rails, crash rails and supporting structures

(4) Spare chain locker(s) structural details including chutes (if installed)

(5) Structural details of A-frame and deck cranes, if certification is requested

(6) Structural details of

3. For Information

(1) Details on winches lows:

supporting structures of A-frames and deck cranes

for anchor handling, towing and secondary winches (storage reels), as fol-

(A) Type, rating (braking power of the winches)

(B) location and layout (with foundation or foundation footprint drawing)

(C) Weights and centers of gravity

(D) Electrical and/or piping schematic diagrams of power supply and control system for the towing equipment

(E) Locations of control stations or human-machinery interfaces

(F) Arrangement and details of communication systems between anchor handling operation con- trol stations and navigation bridge

(2) Information regarding ropes and/or wires to be set on the above winches, as follows:

(A) Type, lengths, diameters minimum specified breaking strength weights

(3) Details, ratings, location and arrangements of all the towing and/or anchor handling structures and devices in way of cargo deck, as follows:

(A) Steel sheet cladding on top of wooden sheathing

(B) Quick release device or devices (if installed)

(C) Shark jaws/towing pins unit or units

(D) Towing eye-bars (if installed)

(E) Anchor launch and recovery unit for deep penetrating anchors (if installed)

(F) A-frame (if installed), deck cranes, tugger winches and/or capstans

(G) Pad-eyes for securing and lashing anchors on deck (H)- Aft roller or rollers

(4) Laying arrangement and weights of anchors carried as cargo

(5) Estimated static bollard pull, together with the method of prediction. (The estimated value is to be confirmed at Trials prior to final certification)

(6) Estimated operational pull within speed range of 0-8 knots at 1 knot intervals, together with the method of prediction (The estimated values may be based on tank test results of required power

and allowable trust curves. CFD techniques may be utilized for this purpose as well The required

power values are to be multiplied by the factor of 1.4 to accommodate potential power increase, necessary for station keeping in extreme environmental conditions)

(7) Static Bollard Pull Test Procedure