Singapore legislation
Schedule 1
of Maritime and Port Authority of Singapore (Pleasure Craft) Regulations
Schedule 1
Simplified tonnage measurement method
FIRST SCHEDULERegulation 2(1)Simplified tonnage measurement methodApplication
1. The following simplified method of measurement shall be used for pleasure craft which are less than 24 metres in load line length, and of normal proportions and form. The Port Master’s determination of whether a pleasure craft is of normal proportions and form shall be conclusive.Definitions
2. In this Schedule, unless the context otherwise requires — “Breadth (B)” means the maximum width of the pleasure craft, excluding rub rails and deck caps, measured in metres from the outside of the hull on one side to the outside of the hull on the other side of the pleasure craft. “Depth (D)” means the maximum depth of the pleasure craft measured in metres vertically from the top of the deck at the side to the underside of the hull where it meets the keel or to the point where the projected line of the bottom intersects the pleasure craft’s centreline. “Length (L)” means the distance in metres measured along the main deck at the centreline of the pleasure craft from the fore side of the hull to the aft side of the transom. Bowsprits, stern mounted diving platforms, and other appendages that do not contribute to the volume of the pleasure craft are not to be included in this measurement. “Volume” means the product of length, breadth, and depth.Measurements3.—
All measurements shall be made in accordance with the following paragraphs:
All lengths and depths shall be measured in a vertical plane at centreline.(b)All breadths shall be measured in a line at right angles to that plane.(c)All dimensions shall be expressed in metres.(2) For multihull pleasure craft, each hull shall be measured separately for overall length, breadth, and depth and the pleasure craft as a whole shall be measured.Deck Structures4.—
If deck structures are excessive in size, the gross tonnage shall be calculated by adding the principal deck structure tonnage to the gross tonnage(s) of the pleasure craft’s hull(s).(2) For the purpose of paragraph (1), deck structures are considered excessive in size if the tonnage of the principal deck structure calculated using the formula below is equal to or exceeds the gross tonnage(s) of the pleasure craft’s hull(s).PRINCIPAL DECK STRUCTURE TONNAGE = L x B x D/2.831Calculations
5. The gross tonnage of the following types of hulls shall be calculated as follows:Multihull Pleasure Craft
6. The gross tonnage of a multihull pleasure craft shall be the sum of the gross tonnage of each hull as calculated using the formulas listed above. For example:Where L is the length of the centre hull and L1 is the length of the outside hulls.[S 727/2010 wef 01/12/2010]