Section 5 Completion trials
Clasification Society 2024 - Version 9.40
Clasifications Register Guidance Information - Naval Survey Guidance for Steel Ships, January 2001 - Chapter 3 Construction Procedures - Section 5 Completion trials

Section 5 Completion trials

Parent topic: Chapter 3 Construction Procedures

5.1 Attendance on trials

5.1.1 Surveyors are required to attend the trials of any vessel being built under Special Survey to assess the following items:

  • Anchoring and mooring equipment.
  • Hull watertight integrity, valves, seals and glands.
  • Weathertight integrity of large openings that may be operated at sea.

5.1.2 The following items are to be examined before and after operation on sea trials to check for deformation or defects:

  • Equipment seats and foundations after operation of equipment in the normal working environment.
  • Large ballast tanks after filling at sea.

5.1.3 Testing of windlass is to be held in accordance with the instructions in Vol 2, Pt 1, Ch 3 Requirements for Design, Construction, Installation and Sea Trials of Engineering Systems of the Rules for Naval Ships. In addition, it is expected that the Surveyors will generally examine the ship during the trials period to ensure that there is no unusual vibration during service. Although it is stressed that LR’s Rules do not cover certain technical characteristics, which may include vibration, and that LR cannot assume responsibility for this aspect, the Owner or Builder may request advice. For any such request, advice should be sought from Headquarters, providing any relevant details noted by the Surveyors. Reference can also be made to LR’s Guidance Notes - Acceptable Vibration Levels (Shipboard Vibration).

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