Section 9 Trials
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 7 Other Ship Types and Systems - Chapter 8 Positional Mooring and Thruster-Assisted Positional Mooring Systems - Section 9 Trials

Section 9 Trials

Parent topic: Chapter 8 Positional Mooring and Thruster-Assisted Positional Mooring Systems

9.1 General

9.1.1 Before a new installation (or any alteration or addition to an existing installation) is put into service, trials are to be carried out. These trials are in addition to any acceptance tests which may have been carried out at the manufacturers' works and are to be based on the approved test schedules list as required by Pt 7, Ch 8, 1.5 Plans and data submission 1.5.4.(h).

9.1.2 The suitability of the positional mooring and/or thruster-assisted positional mooring system is to be demonstrated during sea trials, observing the following:

  1. Response of the system to simulated failures of major items of control and mechanical equipment, including loss of electrical power.

  2. Response of the system under a set of predetermined manoeuvres for changing:

    1. Location of area of operation.

    2. Heading of the ship.

  3. Automatic thruster control and line tension optimisation.

  4. Monitoring and consequence analyses.

  5. Simulation of line breakage and damping.

  6. Continuous operation of the thruster-assisted positional mooring system over a period of four to six hours.

9.1.3 Two copies of the test schedules, as required by Pt 7, Ch 8, 1.5 Plans and data submission 1.5.4.(h), signed by the Surveyor and Builder, are to be provided on completion of the survey. One copy is to be placed on board the ship and the other submitted to LR.

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