CHAPTER 2 CLASSIFICATION AND SURVEYS

101. Classification

The classification of a WIG ship is to be in accordance with the requirements specified in Pt 1 of

Rules for the Classification of Steel Ships.

102. Classification survey

Kinds, due range and survey items of classification survey of a WIG ship are to be in accordance with Pt 1 of Rules for the Classification of Steel Ships, but Pt 1, Ch 2, Sec 7 (Surveys of Propeller Shaft and Stern Tube Shaft, Etc.) is not apply and for Passenger WIG ships

Intermediate Survey and Docking Survey are each anniversary date. However at Annual

Docking Survey the following items are to be

to be carried out within 3 months before or after Survey, Intermediate Survey, Special Survey and

surveyed in addition to the survey items specified in

Pt 1 of Rules for the Classification of Steel Ships.

1. At Annual Survey

(1) confirming integrity of the envelop of hull such as hull, side hull, wing, tail and other struc-

tures, etc. However, it is to apply only for the hull above water line where the dock or on a slipway is not required.

(2) hose test to structures of hull envelop, such as hull, main wing, etc.

weathertightness.

(3) close-up survey for areas in way of connections between each hull, side hull,

survey in dry- which require

wing, tail and

other structures, etc. The non-destructive test is to be carried out if deemed necessary by the

Surveyor.

(4) confirming the integrity of the internal corridor and internal structure as far as practicable.

(5) confirming the connections of seats to floor

(6) confirming the direction, speed and attitude control system(wing control system, water rudder and air rudder). The operational test is to be carried out if deemed necessary by the Surveyor.

(7) confirming the integrity of towing equipment if fitted.

(8) confirming any alteration to installations and arrangement for structural fire protection.

(9) confirming all sea openings together with valves, cocks and fastenings connecting hull.

(9) visual inspection to propeller blade and shafting as far as practicable. The non-destructive test is to be carried out if deemed necessary by the Surveyor.

(10) external examination for fuel oil tanks

(11) visual inspection to fuel oil system, lubricating oil system, cooling system, exhaust system and hydraulic system.

(12) operational test for fuel oil and lubricating oil cut-off device.

(13) examining the working condition of machinery equipment, The effectiveness test is to be car- ried out if deemed necessary by the Surveyor.

(14) examining the working condition of electrical equipment, The effectiveness test is to be carried

out if deemed necessary by the Surveyor.

(15) general visual inspection to the inside of the cockpit.

(16) examining cables as far as practicable.

(17) confirming the effectiveness of earthing measures to the hull.

2. At Intermediate Survey

(1) examination specified in Par 1 above

(2) operational test and confirming the installation condition for the direction, speed and attitude control system(wing control system, water rudder and air rudder).

(3) non-destructive examination for the propeller boss area (except controllable pitch propeller) and

confirming the propeller balance condition without removal of the propeller.

(4) confirming the condition of the indicators in the cockpit.

3. At Special Survey

(1) examination specified in Par 2 above

(2) close-up survey for bottom shell plating from the outside of the hull. The non-destructive test is to be carried out if deemed necessary by the Surveyor.

(3) effectiveness test for machinery and control system.

Guidance for WIG ships(Wing-In-Ground Effect Ships) 2012 3

Ch 2 Classification and Surveys Ch 2

(4) checking and confirming the setting value for the protection of the main engine and generators

(5) water landing and take-off test

(6) non-destructive examination for areas in way of connections by weld, bolt, rivet, etc. between each hull, side hull, tail and other structures, etc.

(7) effectiveness test for special equipment(alarm systems and aerodynamic stabilization systems) specified in Ch 11.

4. At Docking Survey

(1) examining the movable parts of wing and tail such as flap, aileron, elevator, rudder, etc. with removal. and confirming the installation and working condition after re-installation.

(2) all propeller shafts are to be opened up for examination, and the after end of the cylindrical

part of the shaft and forward one third of the shaft cone, or fillet of the flange, is to be exam- ined by an effective crack detection method. In the case of a keyed propeller attachment at least the forward one third of the shaft cone is to be examined by an effective crack detection method with the key removed. Bearings, oil glands, propellers and fastenings are to be examined. Controllable pitch propellers where fitted are to be opened up and the working parts examined, together with the control gear.

(3) Directional propellers are to be dismantled for examination of the propellers, shafts, gearing, control, electrical and monitoring equipment.

103. Class notation

The class notations assigned to the WIG ships classed with the Society are to be in accordance with the requirements specified in Pt 1, Ch 1, 201. of Rules for the Classification of Steel Ships. However, the notation "Passenger WIG-A" or "General WIG-A" for WIG ship of type A, "Passenger WIG-B" or "General WIG-B" for WIG ship of type B specified in Ch 1, 104. shall be assigned for Passenger WIG Ships or General WIG Ships, as an additional special feature notation.

104. Submission of plans and documents

1. For a WIG ship requiring Classification Survey during Construction, the relevant plans and docu- ments are to be submitted to the Society in accordance with the Rules for the Classification of Steel Ships. In addition to this the following plans and/or documents are to be submitted.

(1) materials, scantlings and structures for side hull, wing and tail

(2) other structures such as cowling, nacelle, strut, yoke, etc.

(3) direction, speed and attitude control system(wing control system, water rudder and air rudder)

(4) alarm systems and aerodynamic stabilization systems

(5) cockpit arrangement including the indicators and emergency escape arrangement for pilot

(6) other plans and/or documents deemed necessary by the Society

2. When a WIG ship is constructed in complex material, the lay-up procedures, joint details, raw ma- terial lists, moulding procedures and certificates of complex material tests are to be submitted additionally.

3. For a WIG ship requiring Classification Survey after Construction, the relevant plans and documents as required for the Classification Survey during Construction are to be submitted.

4 Guidance for WIG ships(Wing-In-Ground Effect Ships) 2012

Ch 3 Structures Ch 3