Information to be included in the trim and stability booklet

1.1 Information to be included in the trim and stability booklet

1.1.1 General

A trim and stability booklet is a stability manual, to be approved by the Society, which is to contain information to enable the Master to operate the ship in compliance with the applicable requirements contained in the Rules.

The format of the stability booklet and the information included vary depending on the ship type and operation.

1.1.2 List of information

The following information is to be included in the trim and stability booklet:

• a general description of the ship, including:
  • the ship's name and the Society classification number
  • the ship type and service notation
  • the class notations
  • the yard, the hull number and the year of delivery
  • the Flag, the port of registry, the international call sign and the IMO number
  • the moulded dimensions
  • the draught corresponding to the assigned summer load line, the draught corresponding to the assigned summer timber load line and the draught corresponding to the tropical load line, if applicable
  • the displacement corresponding to the above- mentioned draughts
• instructions on the use of the booklet
• general arrangement and capacity plans indicating the assigned use of compartments and spaces (cargo, passenger, stores, accommodation, etc.)
• a sketch indicating the position of the draught marks referred to the ship's perpendiculars
• hydrostatic curves or tables corresponding to the design trim, and, if significant trim angles are foreseen during the normal operation of the ship, curves or tables corresponding to such range of trim are to be introduced. A reference relevant to the sea density, in t/m3, is to be included as well as the draught measure (from keel or underkeel).
• cross curves (or tables) of stability calculated on a free trimming basis, for the ranges of displacement and trim anticipated in normal operating conditions, with indication of the volumes which have been considered in the computation of these curves
• tank sounding tables or curves showing capacities, centres of gravity, and free surface data for each tank
• lightship data from the inclining test, as indicated in Ch 3, Sec 1, [2.2], including lightship displacement, centre of gravity co-ordinates, place and date of the inclining test, as well as the Society approval details specified in the inclining test report. It is suggested that a copy of the approved test report be included. 
  Where the above-mentioned information is derived from a sister ship, the reference to this sister ship is to be indicated, and a copy of the approved inclining test report relevant to this sister ship is to be included.
• standard loading conditions as indicated in [1.2] and examples for developing other acceptable loading conditions using the information contained in the booklet
• intact stability results (total displacement and its centre of gravity co-ordinates, draughts at perpendiculars, GM, GM corrected for free surfaces effect, GZ values and curve, criteria as indicated in Ch 3, Sec 2, [2] and Ch 3, Sec 2, [3] as well as possible additional criteria specified in Part E when applicable, reporting a comparison between the actual and the required values) are to be available for each of the above-mentioned operating conditions. The method and assumptions to be followed in the stability curve calculation are specified in [1.3].
• information on loading restrictions (maximum allowable load on double bottom, maximum specific gravity allowed in liquid cargo tanks, maximum filling level or percentage in liquid cargo tanks, maximum KG or minimum GM curve or table which can be used to determine compliance with the applicable intact and damage stability criteria) when applicable
• information about openings (location, tightness, means of closure), pipes or other progressive flooding sources
• information concerning the use of any special cross-flooding fittings with descriptions of damage conditions which may require cross-flooding, when applicable
• any other guidance deemed appropriate for the operation of the ship
• a table of contents and index for each booklet.

AIS SART

AIS SART: A Search And Rescue Transponder/Transmitter (SART) is a self-contained device intended for emergency use at sea. The SART shall be capable of indicating the location of a vessel in distress on the assisting vessel’s radar or AIS (Automatic Identification System).

Imo req:  The AIS-SART should: 

1 be capable of being easily activated by unskilled personnel.

2 be fitted with means to prevent inadvertent activation.

3 be equipped with a means which is either visual or audible, or both visual and audible, to indicate correct operation; 

 

4 be capable of manual activation and  deactivation; provision for automatic activation may be included:

 

5 be capable of withstanding without damage drops from a height of 20 m into water.

 
6 be watertight at a depth of 10 m for at least 5 min.

7 maintain water tightness when subjected to a thermal shock of 45°C under specified conditions of immersion;

8 be capable of floating (not necessarily in an operating position) if it is not an integral part of the survival craft;

9 be equipped with buoyant lanyard, suitable for use as a tether,if it is capable of floating;

10 not be unduly affected by seawater or oil.

11 be resistant to deterioration in prolonged exposure to sunlight.

12 be of a highly visible yellow/orange colour on all surfaces where this will assist detection.

13 have a smooth external construction to avoid damaging the survival craft.

14 be provided with an arrangement to bring the AIS-SART antenna to a level of atleast 1 metre above sea level, together with illustrated instructions; 

15 be capable of transmitting with a reporting interval of 1 minute or less.

16 equipped with an internal position source and be capable of transmitting its current position in each message; and 

17 be capable of being tested for all functionalities using specific test information.

 

2.2 The AIS-SART should have sufficient battery capacity to operate for 96 h within a 

temperature range of -20°C to +55°C, and to provide for testing of the functions on the 

equipment.  The AIS-SART should have an unique identifier to ensure  the integrity of the 

VHF data link. 

2.3 The AIS-SART should be so designed as to be able to operate under ambient 

temperatures of -20°C to +55°C.  It should not be damaged in stowage throughout the 

temperature range of -30°C to +70°C.  

2.4 The AIS-SARTs should be detectable at a range of 5 nautical miles over water.  

2.5 The AIS-SART should continue transmission even if the position and time synchronization from the positioning system is lost or fails. 

2.6 The AIS-SART should transmit within 1 minute of activation.