Singapore legislation
Schedule 1
Schedule 1
Simplified gross tonnage measurement method
FIRST SCHEDULERegulation 2Simplified gross tonnage measurement methodApplication1.—
The following simplified method of measuring gross tonnage is to be used for pleasure craft that are less than 24 metres in load line length and of normal proportions and form.
The Director’s determination of whether a pleasure craft is of normal proportions and form is conclusive.Definitions
2. In this Schedule, unless the context otherwise requires —“breadth” or “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” or “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 with the pleasure craft’s centreline;“length” or “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;“volume” means the product of length, breadth and depth.Measurements3.—
In this Schedule, all measurements must be made in accordance with the following sub‑paragraphs:
all lengths and depths must be measured in a vertical plane at centreline;
all breadths must be measured in a line at right angles to that plane;
all dimensions must be expressed in metres.
For multihull pleasure craft, each hull must be measured separately for overall length, breadth, and depth and the pleasure craft as a whole must be measured.
When measuring the length of a pleasure craft, the measurement must not include any bowsprit, stern mounted diving platform or other appendage that does not contribute to the volume of the pleasure craft.Deck structures4.—
If any deck structure on a pleasure craft is excessive in size, the gross tonnage of the pleasure craft is calculated by adding the tonnage of the principal deck structure to the total gross tonnage of all of the pleasure craft’s hulls.
For the purpose of sub‑paragraph (1), a deck structure is considered excessive in size if the tonnage of the principal deck structure calculated using the following formula is equal to or exceeds the total gross tonnage of all of the pleasure craft’s hulls:Calculations
5. The gross tonnage of the following types of hulls is calculated as follows:Multihull pleasure craft
6. The gross tonnage of a multihull pleasure craft is 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.