Iranian Classification Society Rules

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Section 2 Structural Arrangement for Anchoring Equipment


201. General


1. The anchors are normally to be housed in hawse pipes of suitable size and form to prevent move- ment of the anchor and chain due to wave action.


2. The arrangements are to provide an easy lead of the chain cable from the windlass to the anchors.


3. Upon release of the brake, the anchor is to start falling immediately by its own weight.


4. At the upper and lower ends of hawse pipes, there are to be chafing lips.


5. The radius of curvature at the upper end should be such that at least 3 links of chain bear simul- taneously on the rounded part. Alternatively, roller fairleads of suitable design may be fitted.


6. Where hawse pipes are not fitted, alternative arrangements will be specially considered.


7. The shell plating in way of the hawse pipes is to be increased in thickness and the framing re- inforced as necessary to ensure a rigid fastening of the hawse pipes to the hull.


8. The chain locker is to have adequate capacity and suitable form to provide a proper stowage of the chain cable, and an easy direct lead for the cable into the chain pipes when the cable is fully stowed. When chain cable is substituted by wire or synthetic fibre ropes, the installation of chain locker may be exempted.


9. The chain locker boundaries and access openings are to be watertight and be made to minimize the probability of the chain locker being flooded in bad weather. Adequate drainage facilities of the chain locker are to be adopted.


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10. Provisions are to be made for securing the inboard ends of chain to the structure. This attachment is to be able to withstand a force of not less than 15 %, nor more than 30 %, of the minimum breaking strength of the chain cable.

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11. The fastening of the chain to the yacht is to be made in such a way that in case of emergency when anchor and chain have to be sacrificed, the chain can readily be made to slip from an ac- cessible position outside the chain locker.


12. The windlass and chain stoppers are to be effectively bedded to the deck. The deck plating in

way of windlass and chain stopper is to be increased in thickness and supported down to rigid structures.


13. yachts with bulbous bow or other protruding hull parts are to be reinforced in anchor/chain.

by pillars carried


areas exposed to