Section 2 Particulars to be submitted
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Special Service Craft, July 2022 - Part 12 Propulsion Devices - Chapter 3 Thrusters - Section 2 Particulars to be submitted

Section 2 Particulars to be submitted

Parent topic: Chapter 3 Thrusters

2.1 Submission of information

2.1.1 At least three copies of the following plans are to be submitted.

2.1.2  Fixed/Azimuth propulsion thrusters.

  1. A general arrangement sectional assembly plan showing all the connections of the torque transmitting components from the prime mover to the propeller, together with the azimuthing mechanism and, if a nozzle is provided, the nozzle ring structure and nozzle support struts.

  2. Detailed and dimensional plans of the individual torque transmitting components.

  3. Schematic plans of lubricating and hydraulic systems, together with pipe material, relief valves and working pressures.

2.1.3  Tunnel thrusters.

  1. Structural assembly plan including connections to tunnel.

2.2 Calculations and specifications

2.2.1 At least three copies of the following information are to be submitted.

2.2.2  Fixed/Azimuth propulsion thrusters.

  1. Thruster prime mover type and operational power/speed envelope.

  2. Rating and type of motor for the azimuthing mechanism (e.g. type - hydraulic or electric).

  3. Gearing calculations for the azimuthing mechanism which is to be designed to a recognised National Standard.

  4. Bearing specifications.

  5. Details of control engineering aspects in accordance with Pt 16, Ch 1 Control Engineering Systems.

  6. Calculations indicating suitability of components for short term high power operation, where applicable. See Pt 9 General Requirements for Machinery.

  7. Where carried out in accordance with Pt 9 General Requirements for Machinery, a fatigue strength analysis of components indicating a factor of safety of 1,5 at the design loads, based on a suitable fatigue failure criteria.

2.2.3  Tunnel thrusters.

  1. Specification for materials of gears, shafts, couplings and propeller, stock and struts.

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