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Article 16 Verdrag nopens een eenvormig stelsel voor de meting van zeeschepen

When determining the extreme points of the tonnage length according to the principles laid down in Article 15, the following procedure should be observed:

1. In the case of ships having a vertical bow (or stem) and a vertical stern both below and above the tonnage deck, measure horizontally the depth of frames and the thickness of the ceiling (if fitted) forward and aft, immediately below the tonnage deck. Set off these measurements on the upper side of the deck from the shell plating in the direction in which the frames have been measured and draw through the points thus obtained lines parallel to the shell. The points of intersection of these lines fore and aft are the extreme points of the tonnage length (see Figures 5 and 6).

2. In the case of ships having no vertical bow (or stem) or no vertical stern at the level of the tonnage deck, the extreme points of the tonnage length are, when practicable, to be determined at the under side of the tonnage deck. The distance from these points to a hatch-coaming, bulkhead, etc., should be measured and transferred to the upper side of the tonnage deck as indicated in Figure 7.

Should it not be practicable to determine the extreme points of the tonnage length at the under side of the tonnage deck, and should the thickness of this deck be considerable (e.g., a wooden deck) the rake of the bow (or stem) or stern in the thickness of the deck is to be taken into account. This is done after having first proceeded as indicated in paragraph 1 and as is shown in Figures 5 and 6, by measuring the thickness of the tonnage deck and determining by means of a hinged rule the angle of the rake which the bow (or stem) or the stern forms with the tonnage deck. Transfer thereafter this angle on to a plane (e.g., a bulkhead or the top of the deck) by drawing the lines a, b, c (see Figure 8), and proceed as stated in the explanatory note.

It should be borne in mind that the condition for applying the method of setting out the angles on the upper side of the tonnage deck is that the stem and the stern have the same angle of rake above and immediately below the tonnage deck. If, for instance, the angle of rake at or immediately below the tonnage deck is a different one, then this last angle must be used.

3. Should a ship as referred to in paragraph 2 have a square bow or stern, it will be necessary to make a correction for round of beam (camber) where such exists. This should be done by increasing the thickness of the deck in Figure 8 by one-third of the round of beam at the extreme point of the tonnage length.

1) Should the tonnage deck beam at the extreme points of the tonnage length have a round of beam (camber), in case of a ship with a square bow or stern, or rise in a straight line from the sides of the ship towards the middle plane, then the points are situated respectively at one-third of the round of the beam or one-half of the rise below the under side of the tonnage deck in the middle plane.

Regeling
Verdrag nopens een eenvormig stelsel voor de meting van zeeschepen
Soort
Verdrag
Geldend vanaf
01-02-1964
BWB-id
BWBV0005524
Versie
1964-02-01_0

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