Section 1 General

1.1 Application

1.1.1 The requirements of this Chapter apply to mobile offshore units intended for fire-fighting operations and are additional to those applicable in other Parts of the Rules.

1.1.2 A unit provided with fire protection and firefighting equipment in accordance with these Rules will be eligible for an appropriate class notation.

1.1.3 Requirements additional to these Rules may be imposed by the National Authority with whom the unit is registered and/or by the Administration within whose territorial jurisdiction the fire-fighting unit is intended to operate.

1.2 Class notations

1.2.1 The Regulations for classification and the assignment of class notations are given in Pt 1, Ch 2 Classification Regulations, to which reference should be made.

1.2.2 Units complying with the requirements of this Chapter and the relevant Parts of the Rules will be eligible for the assignment of one of the following class notations as applicable:

Fire-fighting unit 1 (total monitor discharge capacity in brackets).
Fire-fighting unit 2 (total monitor discharge capacity in brackets).
Fire-fighting unit 3 (total monitor discharge capacity in brackets).
Fire-fighting unit 1 (total monitor discharge capacity in brackets) with water spray.
Fire-fighting unit 2 (total monitor discharge capacity in brackets) with water spray.
Fire-fighting unit 3 (total monitor discharge capacity in brackets) with water spray.

1.2.3 The notation Fire-fighting unit 1 or Fire-fighting unit 2 or Fire-fighting unit 3 signifies that a unit complies with these Rules and is provided with the appropriate firefighting equipment described in Pt 3, Ch 5, 1.2 Class notations 1.2.3, with the total discharge capacity of monitors in m³/h shown in brackets.

Table 5.1.1 Fire-fighting equipment

Equipment	Fire-fighting unit
Equipment	1	2	3
Minimum total pump capacity, m³/h	2400	7200	10000
Minimum number of water monitors	2	3	4
Minimum discharge rate per monitor, m³/h	1200	1800	1800
Minimum height of trajectory of jets of monitors above sea level, metres	45	70	70
Minimum range of monitor jets, metres	120	150	150
Minimum fuel capacity for monitors, hours	24	96	96
Number of hose connections each side of unit	4	8	8
Number of fireman’s outfits	4	8	8

1.2.4 The addition of the words with water spray to the notations referred to in Pt 3, Ch 5, 1.2 Class notations 1.2.3 signifies that a unit is provided with a water spray system which will provide an effective cooling spray of water over the vertical surfaces of the unit to enable it to approach a burning installation for firefighting purposes. The requirements for such a system are set out in Pt 3, Ch 5, 4 Fire protection.

1.2.5 Support units may be assigned additional class type notations when appropriate, see Pt 3, Ch 4, 1.2 Class notations.

1.3 Surveys

1.3.1 The requirements for surveys are given in Pt 7, Ch 3, 1.3 Surveys of the Rules for Ships, which are to be complied with where applicable.

1.4 Plans and data submission

1.4.1 The requirements for submission of plans are given in Pt 7, Ch 3, 1.4 Submission of plans of the Rules for Ships, which are to be complied with where applicable.

1.5 Definitions

1.5.1 The requirements for definitions are given in Pt 7, Ch 3, 1.5 Definitions of the Rules for Ships, which are to be complied with where applicable.