SECTION 1 - Boat Design Net

Pt C, Ch 1, Sec 1SECTION 1GENERAL REQUIREMENTS AND APPLICATION1 General1.1 Application1.1.1 Chapter 1 applies to the design, construction, installation,tests and trials of main propulsion and essential auxiliarymachinery systems and associated equipment,pressure vessels, piping systems, and steering and manoeuvringsystems installed on board classed yachts, as indicatedin each Section of this Chapter and as far as class isconcerned only.Where the word yachts is used in the subsequent chapter, itmeans yachts and charter yachts.1.1.2 In the present Chapter, length reference to 24 mmeans:• for yacht: Hull length, L h , as defined in EC Directive (ENISO standard 8666:2002) reminded in Pt A, Ch 2, Sec1, [2.2.1]• for charter yacht: Length according to InternationalRules, L LL , as defined in Pt A, Ch 2, Sec 1, [2.2.1].1.2 Statutory requirements1.2.1 Attention is to be paid to any relevant statutoryrequirements of the National Authority of the country inwhich the yacht is to be registered, as stated in Part A.In particular, no specific requirements related to preventionof marine pollution are included in the present Rules.1.3 Documentation to be submitted1.3.1 Before the actual construction is commenced, theManufacturer, Designer or yacht builder is to submit to theSociety the documents (plans, diagrams, specifications andcalculations) requested in the relevant Sections of thisChapter.1.4 Definitions1.4.1 Engine spaceOn yachts of less than 24m in length, the engine space isthe space or compartment of the yacht containing main orauxiliary engine(s).1.4.2 Machinery spacesOn yachts of 24 m in length and over, machinery spaces aremachinery spaces of category A and other spaces containingpropulsion machinery, boilers, oil fuel units, steam andinternal combustion engines, generators and major electricalmachinery, oil filling stations, refrigerating, stabilizing,ventilation and air conditioning machinery, and similarspaces, and trunks to such spaces.1.4.3 Machinery spaces of category AOn yachts of 24 m in length and over, machinery spaces ofcategory A are those spaces and trunks to such spaceswhich contain either:a) internal combustion machinery used for main propulsion,orb) internal combustion machinery used for purposes otherthan main propulsion where such machinery has in theaggregate a total power output of not less than 375 kW,orc) any oil-fired boiler or oil fuel unit, or any oil-firedequipment other than boilers, such as inert gas generators,incinerators, etc.1.4.4 Fuel oil unitFuel oil unit is the equipment used for the preparation offuel oil for delivery to an oil fired boiler, or equipment usedfor the preparation for delivery of heated oil to an internalcombustion engine, and includes any oil pressure pumps,filters and heaters dealing with oil at a pressure of morethan 0,18 N/mm 2 .1.4.5 Continuity of serviceThe Shipyard is to give special consideration to the reliabilityof single essential propulsion components. This mayrequire a separate source of propulsion power sufficient togive the yacht a navigable speed, especially in the case ofunconventional arrangements.2 Design and construction2.1 General2.1.1 The machinery, pressure vessels, associated pipingsystems and fittings are to be of a design and constructionadequate for the service for which they are intended andare to be so installed and protected as to reduce to a minimumany danger to persons on board, due regard beingpaid to moving parts, hot surfaces and other hazards.The design is to have regard to materials used in construction,the purpose for which the equipment is intended, theworking conditions to which it will be subjected and theenvironmental conditions on board.2.2 Materials, welding and testing2.2.1 GeneralMaterials, welding and testing procedures are to be inaccordance with the requirements of the Rule Note NR216Materials and Welding and those given in the other Sectionsof this Chapter. In addition, for machinery components fabricatedby welding the requirements given in [2.2.2] apply.July 2006 with February 2008 Amendments Bureau Veritas Rules for Yachts 307