Page 252 - Rules of Navigation2020

APPENDIX No. 1

Extract from the Regulations for the

Measurement of tonnage recommended by

the International Tonnage Commission
assembled at Constantinople, In 1873

(Minutes of proceedings XXI, Appendix II)

General Principles:

(1) The gross tonnage or total capacity of ships comprises the exact measurement of all spaces
(without any exception), below the upper deck, as well as of all permanently covered and
closed -in spaces on that deck.

N.B.: By permanently covered and closed - in spaces on the upper deck are to be understood

as all those spaces which are separated off by decks or coverings, or fixed partitions and
therefore represent an increase of capacity which might be used for the stowage of

merchandise, or for the berthing and accommodation of the passengers or of the officers and
crew.

Thus, any one or more openings, either in the deck or coverings, or in the partition, or a break
in the deck, or the absence of a portion of the partition, will not prevent such spaces being

comprised in the gross tonnage, if they can be easily closed -in after admeasurement, and thus
better fitted for the transport of goods and passengers.

But the spaces under awning decks without other connection with the body of the ship than the

props necessary for supporting them, which are not spaces “separated off " and are permanently
exposed to the weather and the sea, will not be comprised in the gross tonnage, although they
may serve to shelter the ship's crew, the deck passengers and even merchandise known as "

deck loads ".
(2) " Deck loads " are not comprised in the measurement.

(3) Closed spaces for the use or possible use of passengers will not be deducted from the gross
tonnage.
(4) The determination of deduction for coal spaces may be affected either by the rules of the

European Danube Commission of 1871 or by the exact measurement of fixed bunkers.

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