Section 12 Classification of yachts not built under survey

12.1.1 When classification is desired for a yacht not built under the supervision of LR's Surveyors, application should be made to the Committee in writing.

12.1.2 Periodical Surveys of such yachts, when classed, are subsequently to be held as in the case of yachts built under survey.

12.1.3 Where classification is desired for a yacht which is classed by another recognised Society, special consideration will be given to the scope of the survey.

12.2.1 Plans showing the main scantlings and arrangements of the actual yacht together with any proposed alterations are to be submitted for approval.These should comprise plans of the midship section, longitudinal section and decks, and such other plans as may be requested. If plans cannot be obtained or prepared by the Owner, facilities are to be given for LR's Surveyor to obtain the necessary information from the yacht.

12.2.2 Particulars of the process of manufacture and the testing of the material of construction are to be supplied. The requirements for composite yachts will be specially considered.

12.2.3 The full requirements of Sections Pt 1, Ch 4, 4 Special Survey - General - Hull requirements and Pt 1, Ch 4, 5 Special Survey - Thickness measurement requirements for steel yachts are to be carried out as applicable. Yachts of recent construction will receive special consideration.

12.2.4 During the survey, the Surveyors are to satisfy themselves regarding the workmanship and verify the approved scantlings and arrangements. For this purpose, and also in order to ascertain the amount of any deterioration of steel yachts, parts of the structure will require to be gauged as necessary. Full particulars of the anchors, chain cables and equipment are to be submitted. For yachts to which Pt 14, Ch 1 Steering Systems applies, fire protection, detection and extinction are to be in accordance with the Rules.

12.2.5 When the full survey requirements indicated in Pt 1, Ch 4, 12.2 Hull and equipment 12.2.3 and Pt 1, Ch 4, 12.2 Hull and equipment 12.2.4 cannot be completed at one time, the Committee may consider granting an interim record for a limited period. The conditions regarding the completion of the survey will depend on the merits of each particular case, which should be submitted for consideration.

12.3.1 To facilitate the survey, the following plans and particulars (plans of piping are to be diagrammatic), together with the particulars of the materials used in the construction of any boilers, air receivers and important forgings are to be submitted:

• Name of manufacturer of engine and gearbox including the manufacturer's type designation of engine and gearbox, together with the continuous shaft power of the engine at the crankshaft coupling with the revolutions per minute of crankshaft and propeller.
• General pumping arrangements, including air and sounding pipes (Builder's plan).
• Bilge, ballast and fuel oil pumping arrangements including the capacities of the pumps on bilge service.
• Arrangement and dimensions of any steam pipes.
• Arrangement of fuel oil pipes and fittings at settling and service tanks.
• Arrangement of fuel oil piping in connection with oil burning installations.
• Fuel oil overflow systems, where these are fitted.
• Arrangement of boiler feed systems.
• Fuel oil settling, service and other fuel oil tanks not forming part of the craft's structure.
• Boilers and economisers.
• Air receivers.
• Crank, thrust, intermediate and screw shafting.
• Details of water jet or directional propeller units, if fitted.
• Clutch and reversing gear with methods of control.
• Reduction gearing.
• Propeller (including spare propeller if supplied) where the diameter exceeds 1m.
• Electrical circuits.
• Arrangement of compressed air systems for main and auxiliary services.
• Arrangement of lubricating oil, other flammable liquids and cooling water systems for main and auxiliary services.
• Steering gear including control arrangement.
• Arrangement of exhaust system indicating materials, method of cooling, and if water spray injected, the method of draining.

12.3.2 Plans additional to those detailed in Pt 1, Ch 4, 12.3 Machinery 12.3.1 are not to be submitted unless the machinery is of a novel or special character affecting classification.

12.3.3 Where remote and/or automatic controls are fitted to propulsion machinery and essential auxiliaries, a description of the scheme is to be submitted.

12.3.4 For new yachts and yachts which have been in service less than two years, calculations of the torsional vibration characteristics of the propelling machinery are to be submitted for consideration, as required for yachts constructed under Special Survey. For older yachts the circumstances will be specially considered in relation to their service record and type of machinery installed. Where calculations are not submitted, the Committee may require that the machinery certificate be endorsed to this effect. When desired by the Owner, the calculations and investigation of the torsional vibration characteristics of the machinery may be carried out by LR upon special request.

12.3.5 The main and auxiliary machinery, feed pipes, compressed air pipes and boilers are to be examined as required at Complete Surveys. Working pressures are to be determined from the actual scantlings in accordance with the Rules.

12.3.6 The screwshaft is to be drawn and examined.

12.3.7 Any steam pipes or oil burning installations are to be examined and tested as required by Pt 1, Pt 1, Ch 3, 15 Boilers or Pt 1, Ch 3, 16 Steam pipes of the Rules and Regulations for the Classification of Ships.

12.3.8 The bilge, ballast and fuel oil pumping arrangements are to be examined and amended, as necessary, to comply with the Rules.

12.3.9 The electrical equipment is to be examined as required at Complete Surveys.

12.3.10 The whole of the machinery, including essential controls, is to be tried under working conditions to the Surveyor's satisfaction.