ISO 8666-2020 pdf free download – Small craft – Principal data (ISO 8666:2020).
This document establishes definitions of main dimensions and related data and of mass specificationsand loading conditions.It applies to small craft having a length of the hull (L:) of up to 24 m.
2Normative references
There are no normative references in this document.
3Terms and definitions
For the purposes of this document, the following terms and definitions apply.NOTE For units,see Clause 4.
ISO and lEC maintain terminological databases for use in standardization at the following addresses:- ISo online browsing platform: available at https://www.iso.org/obp
—IEC Electropedia: available at http:.//www.electropedia.org/
3.1
waterlinewL
intersection line of the water’s surface with the craft’s hull when the craft (3.15) is afloat3.2
maximum load waterlinereference waterline
WLref
waterline (3.1) of the craft (3.15) when upright in the maximum loaded displacement(3.6)
3.3
sheerline
intersection between deck and hull, for rounded deck edges the natural intersection, or, where no deckis fitted or the hull extends above the deck (bulwark), the upper edge of the craft’s hull
Note 1 to entry: The upper position of the sheerline depends on the inclination between the hul/deckintersectionand the actual deck.
3.4
transom beamBT
maximum width of the hull at the transom at or below the sheerline(3.3), excluding extensions, handlesand fittings
Note 1 to entry: Where spray rails act as chines or part of the planing surface, they are included in the transombeam measurement.
Note 2 to entry: For craft (3.15) with a rounded or pointed stern or with a transom beam of less than half themaximum beam of the craft, the transom beam,By, is the widest beam at or below the sheerline at the aft quarterlength of the hull.
3.5
displacement
mass of water displaced by the craft (3.15), including all appendages3.6
loaded displacementm LDc
mass of water displaced by the craft (3.15), including all appendages, when in the fully loaded ready-for-use condition
Note 1 to entry: Fully loaded ready-for use condition is described in 7.3.3.7
displacement volumev D
volume of water displaced by the craft (3.15) that corresponds to the displacement(3.5)
Note 1 to entry: Where the density of water used to calculate the volume of displacement is not salt water at adensity of 1 025 kg/m3, the density of water used to calculate the volume of displacement is specified.
3.8
tank capacity
net usable volume of the tank(s) for the craft (3.15) in design trim (3.13) at rest at the maximum loadwaterline (3.2)
3.9
wing mast
spar characterized by its cross-section which shows a smooth transition at the aft end into the sail,thus,contributing to its driving force
3.10
non-sailing boat
craft (3.15) for which the primary means of propulsion is other than by wind power, having referencesail area (3.12) (As) < 0,07(mLDcJ2/3
3.11
sailing boat
craft (3.15) for which the primary means of propulsion is by wind power, having reference sail area(3.12) (As) ≥ 0,07 (mLDc2/3
3.12
reference sail areaA s
actual profile area of sails set abaft a mast, plus the maximum profile areas of all masts, plus referencetriangle area(s) forward of each mast
3.13
design trim
longitudinal attitude of the craft (3.15) when upright, with crew, fluids, stores, and equipment in theposition(s) and load condition(s) designated by the designer or builder.ISO 8666 pdf download.