Section 2 Classification Survey During Construction

201. General

A detailed survey is to be done for structures, materials, dimensions and works of the hull, machi- nery, equipment and articles at the time of the classification survey during construction and confirm whether or not the applicable requirements of each Chapter is complied with and for the dredger that needs the marking of the load lines, the assignment of the load lines is to be done.

202. Documents to be submitted

1. For a dredger requiring classification survey during construction, the following drawings and other documents are to be submitted and approved by this Society.

(1) Hull parts

① General arrangement

② Midship section

③ Construction profile

④ Deck construction

⑤ Superstructure and deckhouse construction

⑥ Shell expansion

⑦ Single and double bottom construction

⑧ Watertight bulkhead

⑨ Fore peak tank and aft peak tank construction

⑩ Transverse section

⑪ Frame structure

⑫ Details of the watertight doors, hatch openings and their arrangements and closing appliances

⑬ Hopper(bottom opening type hold) structure

⑭ Boiler foundation, Main engine foundation, thruster and intermediate shaft foundations, Generator seat and other essential auxiliary seats

⑮ Dredging equipment and foundations

⑯ Mooring and towing equipment

⑰ Steering and anchoring arrangement

⑱ Welding specification

⑲ Fire protection and fire fighting plan

⑳ Other drawings and documents as deemed necessary by this Society

(2) Machinery parts

① General arrangement of dredging equipment, power transmission system, diagram of dredging equipment and operating system

② Drawings and documents of main engines, auxiliary engines, pump and piping systems

③ Other drawings and documents as deemed necessary by this Society

2. For a dredger requiring classification survey during construction, the following drawings and docu- ments in addition to those mentioned in the Par 1 are to be submitted to this society.

(1) Specification

(2) Calculation sheet of the loads which are from dredging equipment and other installations to the supporting structure

(3) Tugging instructions

Ch 2

(4) Tank capacity plan and sounding tables

(5) In a dredger which is intended to get load line assignment, the drawings mentioned in ① to

⑤ and ⑫ in Par 1, and the following drawings:

① Lines

② Hydrostatic curves

(6) Machinery particulars

(7) Torsional vibration calculation sheet for driven shaft of generator of 30 kw and more

(8) Capacity calculation sheet of battery for navigation lights

(9) Light weight distribution chart

(10) Location, mass and limit condition of various mobile dredging equipment according to each load condition

(11) Shear force and bending moment calculation sheet according to each load condition

(12) Calculation sheet of the horizontal forces taken to suction pipes and gallow

(13) Other drawings and documents as deemed necessary by this Society