35. The requirements for openings in shell plating below the margin line, as specified in section 19 of Part I apply to the ships to which this Part applies.

36. The requirements for side and other openings above the margin line and for weather decks, as specified in sections 20 and 21 of Part I, apply to the ships to which this Part applies.

• 37. (1) The provisions specified in subsection 22(3) of Part I relating to issuance of subdivision load line certificates shall apply to ships of Class VI and Class VII that are 150 tons, gross tonnage, or over to which this Part applies.

• (2) The requirements for marking of subdivision load lines as specified in subsection 22(2) of Part I shall apply to ships of Class VI and Class VII that are 150 tons, gross tonnage, or over, except that references in paragraph 22(2)(c) to “the disc” shall read “the disc or diamond”; ships of Class VI and Class VII that make voyages to the United States on the Great Lakes shall be marked in similar manner to that specified in paragraphs 22(2)(a) and (b).

• (3) Subdivision load line certificates will not be issued to ships of Class III, IV, VI or VII that are less than 150 tons, gross tonnage, nor shall such certificates be issued to any ship of Class V or Class VIII regardless of gross tonnage; in the case of such ships, a letter stating the maximum load draft at which the ship is permitted to operate will be issued; this letter shall be posted in the wheel house, under glass, adjacent to the inspection certificate.

38. Subject to section 42, this Part applies to

• (a) ships of Class I and Class II the keels of which were laid on or after November 19, 1952;

• (b) ships of Class III to Class VIII that are certified to carry

  • (i) more than 25 berthed passengers,

  • (ii) more than 50 berthed and unberthed passengers, or

  • (iii) more than 100 unberthed passengers where the distance from the point of commencement of the voyage to the farthest outward point exceeds 15 nautical miles or where the distance of the ship from shore at any time exceeds 5 nautical miles; and

• (c) ships of Class III to Class VIII, other than those described in paragraph (b), where in the opinion of the Board the application of this Part or any provision thereof to any such ship is warranted by reason of the existence of any special hazard.

39. The Board may exempt from any of the provisions of sections 44 to 51 and 52 to 56 any ship of Class I or Class II carrying not more than 36 passengers if it is satisfied that the ship is fitted with an efficient fire detection system complying with the requirements of section 57, capable of giving a visible and audible alarm signal at one or more points in the ship so as to come rapidly to the notice of the master and the crew of the ship, which will indicate the presence and position of any fire in any accommodation space or service space, other than a space that, in the opinion of the Board, affords no substantial risk.