378 Ascertainment of cubical contents of spaces. Moorsor system of measurement. Countries not using Moorsom system. Rule for measur- ing gross tonnage of empty vessels. PROCLAMATIONS, 1937 20. ART . VII (This section was eliminated on recommendation of Special Committee on Panama Canal Tolls and Vessel Measurement Rules, 1936.) MEASUREMENT OF THE CUBICAL CONTENTS OF SPACES MAY BE BY THE MOORSOM SYSTEM IN EACH COUNTRY, OR BY THE MOORSOM SYSTEM AS PRESCRIBED IN THESE RULES 21. ART. VIII . The cubical contents of the spaces included, by these rules, in gross tonnage may, in any country where the Moorsom system of measurement has been adopted, be ascertained under that system as applied in measuring vessels for national registry, provided that system is substantially similar to the Moorsom system of measure- ment as set forth in article IX of these rules. RULES FOR THE MEASUREMENT OF CONTENTS OF SPACES 22. ART . IX . In countries that have not adopted the Moorsom system of measuring spaces within vessels, the cubical contents of any of the spaces included in gross tonnage shall be ascertained according to the Moorsom system as set forth in the following rules: Rule I for the measurement of empty vessels; rule II for laden vessels; rule III for open vessels. RULE I. FOR MEASURING THE GROSS TONNAGE OF EMPTY VESSELS 23. SEC. 1 . The length for the admeasurement of ships having one or more decks is taken on the tonnage deck, which is- (a) The upper deck for vessels having one or two decks. (b) The second deck from below for vessels having more than two decks. 24. Measure the length of ship in a straight line along the upper side of the tonnage deck from the inside of the inner plank (average thickness) at the side of the stem to the inside of the midship stern timber or plank there, as the case may be (average thickness), de- ducting from this length what is due to the rake of the bow in tile thickness of the deck and what is due to the rake of the stern timber in the thickness of the deck, and also what is due to the rake of the stern timber in one-third of the round of the beam; divide the length so taken into the number of equal parts required by the following table, according to the class in such table to which the ship belongs: Class 1: Ships of which the tonnage deck is, according to the above measurement, 50 feet long or under, into four equal parts. Class 2: Ships of which the tonnage deck is, according to the above measurement, above 50 feet long and not exceeding 120 feet, into six equal parts. Class 3: Ships of which the tonnage deck is, according to the above measurement, above 120 feet long and not exceeding 180 feet, into eight equal parts. Class 4: Ships of which the tonnage deck is, according to the above measurement, above 180 feet long and not exceeding 225 feet, into 10 equal parts. Class 5: Ships of which the tonnage deck is, according to the above measurement, above 225 feet long, into 12 equal parts. (Note: A greater number of divisions is permissible provided there be an even number of divisions.) 25. In the case of a break or breaks in a double-bottom, the length of the vessel is to be taken in parts according to the number of breaks,
�
