Section 8 Temporary or Emergency Mooring Equipment

801. General

Anchors, anchor chains and ropes necessary for temporary or emergency mooring are to be pro-

vided on units in accordance with the requirements in Pt 4, Ch 8

Classification of Steel Ships according to their equipment number specified ever, deemed appropriate by the Society, the requirements in Ch 19

of Rules for the

in 802. Where, how- of Rules for the

Classification of Steel Barges may be applied to the mooring equipment of units having no pro-

pelling machinery. And further, the mooring equipment of units moored for long period of time or semi-permanently is to be at the discretion of the Society.

802. Equipment number

1. The equipment number of surface type units is to comply with the requirements in Pt 4, Ch 8 of Rules for the Classification of Steel Ships for ship type units and Ch 19 of Rules for the Classification of Steel Barges for barge type units.

2. The equipment number of self-elevating units and column-stabilized units is to be obtained from the following formula.

Ī

ÜĮ

ˇ Ñ ĪA Ñ LǾÌA

Ì Ī

ˇ : Displacement of the unit in temporary mooring condition(t).

AÌ and AĪ : projected areas except that of legs of self-elevating units, above the water line on planes perpendicular and parallel to the centre line of the unit, respectively (m Ī).

803. Equivalent mooring equipment

1. A part or whole parts of the temporary mooring arrangement and the mooring equipment for oper- ating condition may be used in each other.

2. If the Society recognizes that the effect of mooring equipment for operating condition is equivalent to that of the temporary mooring equipment specified in 801., such mooring equipment for operat- ing condition is regarded as the temporary mooring equipment specified in this Chapter.

3. Where approved by the Society, wire ropes, which is possessed breaking load not to be less than

the breaking test load of anchor chain, may be used in lieu of anchor chain. In this case,

however,

the wire ropes are to satisfy the requirements in Pt 4, Ch 8, Classification of Steel Ships.

Sec 5 of Rules

for the

Ch 3 Hull Construction and Equipment Ch 3

804. Windlass

Units, except for those moored for a long period of time or semi-permanently, are to be provided with windlasses having a sufficient hoisting capacity.