Commonwealth Numbered Regulations

1982 No. 25 NAVIGATION (SUPPLEMENTARY) REGULATIONS (AMENDMENT) - REG 6

6. After the Schedule to the Navigation (Supplementary) Regulations the
following Schedule is added:

"SCHEDULE 2
Regulation 5
DRAUGHT MARKS Scales to be applied fore and aft
1. A ship referred to in sub-regulation 5 (7) shall be marked on each side of
the bow, and on each side of the stern, with a scale (in this Schedule
referred to as a 'draught scale') in accordance with the succeeding provisions
of this Schedule denoting the draught, fore and aft, respectively, of the
ship. Characteristics of draught scales
2. (1) A draught scale shall comprise a series of marks the underside of each
of which coincides with the intersection between-

   (a)  the part of the hull of the ship on which that scale is required, in
        accordance with this Schedule, to be applied; and

   (b)  a plane (in this Schedule referred to as a 'relevant plane') that is
        one of a series of planes that, at intervals of 2 decimetres, are
        parallel to the plane in which the designed waterline of the ship
        lies.

(2) The lowest mark in a draught scale shall correspond with the relevant
plane that is, at its closest point, 2 decimetres above-

   (a)  in the case of a draught scale that is required to be applied to the
        bow of a ship-the forward cut-up point of the keel; and

   (b)  in the case of a draught scale that is required to be applied to the
        stern of a ship-the lowest point aft of the hull.

(3) The uppermost mark in a draught scale shall be a mark in-

   (a)  a position that corresponds with a relevant plane that is not less
        than such distance above the designed waterline of the ship as is
        equal to 1% of the length of the ship or, where the part of the ship
        on which that scale is required by this Schedule to be inscribed does
        not extend to that plane, the highest relevant plane that intersects
        that part of the ship; or

   (b)  a position that corresponds with the maximum trim by the bow or by the
        stern, as the case requires, that may reasonably be expected in
        service, whichever is the higher position.

(4) Subject to sub-clause (5), a mark referred to in sub-clause (1) shall
comprise an arabic numeral, or arabic numerals, denoting the number of
decimetres in the minimum distance between the relevant plane to which the
mark relates and the point referred to in paragraph (2) (a) or (b), as the
case requires.

(5) A draught scale may be expressed in terms of metres and decimetres, in
which case a mark referred to in sub-clause (4) shall comprise-

   (a)  in the case of the uppermost mark in the scale-a numeral, or numerals,
        denoting the number of complete metres in the distance referred to in
        sub-clause (4) (in this sub-clause referred to as the 'relevant
        draught') followed by the letter 'M' and the number (if any) of
        decimetres in the relevant draught in excess of that number of
        complete metres;

   (b)  in the case of any other mark in the scale in relation to which the
        relevant draught consists solely of a number of complete metres-a
        numeral, or numerals, denoting that number of metres followed by the
        letter 'M'; and

   (c)  in any other case-a numeral denoting the number of decimetres in the
        relevant draught in excess of the maximum number of complete metres in
        the relevant draught or the number of decimetres in the relevant
        draught, as the case requires, being arabic numerals and, where
        applicable, roman capital letters.

(6) A numeral or letter referred to in sub-clause (4) or (5) shall comply with
the following requirements:

   (a)  its height shall be 100 millimetres;

   (b)  the thickness of its strokes shall be not less than 20%, and not more
        than 25%, of that height;

   (c)  it shall-

        (i)    be incised into the surface of the portion of the ship to which
               it is applied; or

        (ii)   form part of the fabric of that portion of the ship and project
               from the surrounding surface of that portion of the ship;

   (d)  it shall be painted with waterproof paint of a colour that makes a
        distinct contrast with the colour of the background on which it
        appears. Position of forward draught marks
3. (1) Subject to sub-clause (2), a draught scale that is required by this
Schedule to be marked on a side of the bow of a ship shall be so marked at the
stem.

(2) Where the bow of a ship incorporates a bulbous projection below the
designed waterline, a draught scale referred to in sub-clause (1) shall be
applied to that ship in a straight line that is perpendicular to the designed
waterline of the ship and is as far forward as is practicable. Position of aft
draught marks
4. A draught scale required by this Schedule to be marked on a side of the
stern of a ship shall be marked on the hull-

   (a)  in the case of a ship having a stern post-in a straight line
        perpendicular to the designed waterline of the ship the lower portion
        of which is on the side of the stern post; or

   (b)  in the case of a ship not having a stern post-in 2 portions, each of
        which is in a straight line perpendicular to the designed waterline of
        the ship, as follows:

        (i)    an upper portion directly abeam of, and not extending below the
               point of intersection of the side of the hull with, the rudder
               stock; and

        (ii)   a lower portion having as its upper limit a mark that relates
               to the draught aft of the ship that is indicated by a mark that
               is not lower than the third to lowest mark in the portion of
               the scale referred to in sub-paragraph (i) that is placed
               forward of, but as near as practicable to, the rudder.
               Unconventional hulls
5. Notwithstanding anything in the preceding provisions of this Schedule,
where, by reason of the nature of the constructional features of a ship-

   (a)  there is no part of the ship that is readily identifiable as the bow,
        or as the stern, of the ship; or

   (b)  it is otherwise impracticable to mark a scale on a ship in the manner
        required by those provisions, that scale shall be marked on the ship-

   (c)  in such position; or

   (d)  in such manner, as the Secretary determines.".