(a) in the case of a ship that is registered under the Act or required by the Act to be registered,
- (i) the distance from the forepart of the uppermost end of the stem to the aft side of the head of the stern post, except that if a stern post is not fitted to the ship, the measurement shall be taken to the foreside of the head of the rudder stock,
- (ii) if the ship has no rudder stock or has a rudder stock situated outside of the hull at the stern, the distance from the foreside of the foremost permanent structure to the aft side of the aftermost permanent structure of the ship, not including guards or rubbing strakes, or
- (iii) if the ship is double-ended, the distance from the aft side of the forward rudder stock to the foreside of the after rudder stock; and
(b) in the case of a ship that is not required by the Act to be registered, the horizontal distance between perpendiculars erected at the extreme ends of the outside of the hull.

Application of Part

79 Sections 80, 81 and 98 do not apply to a ship to which Part VIII applies.

SOR/83-521, s. 3
SOR/2017-14, s. 403

Previous Version

Stability in Undamaged Condition

80 The provisions of section 81 regarding stability tests in the undamaged condition apply to

(a) all passenger ships that make international voyages and any other passenger ship for which such provision is deemed necessary by the Board; and
(b) all cargo ships of 500 tons, gross tonnage, and over, that make international voyages, and any other cargo ship for which such provision is deemed necessary by the Board.

81 (1) All stability tests shall be conducted in the presence of and to the satisfaction of a steamship inspector.
(2) The results of the stability tests shall be developed to indicate the stability of the ship in the conditions, including the light, loaded, arrival and worst operating condition, that will be experienced having regard to the service in which the ship will be engaged.
(3) The owner shall provide in every such ship a document containing the results of the stability tests required by subsection (2) and other relevant information for the use of the master, and it shall be the responsibility of the owner and master to ensure that a proper measure of stability is maintained for all conditions of loading and ballasting; in general, this information shall be such that the master can readily determine the metacentric height and determine the freeboard for any condition of loading; in the case of a ship that, due to its design or type of service requires special consideration of its stability characteristics, the information shall also include an indication of any operating condition that must be maintained to assure the safety of the ship.
(4) If the following plans have not been previously submitted, they shall be made available at the time of the stability test:
- (a) hydrostatic curves including cross curves of stability and curves of righting levers for the various conditions;
- (b) capacity plan showing capacities and vertical and longitudinal centres of gravity of cargo spaces, tanks, etc.;
- (c) tank sounding tables; and
- (d) draught mark locations.
(5) Subject to subsections (7) and (8), the stability test requirements of this section shall also apply to all foreign built vessels, for which application for registry in Canada has been approved, unless proof of the vessel’s stability as required in subsection (3) is submitted and approved by the Board.
(6) In the case of any ship, to which this section applies, that is modified in such manner as to affect the ship’s stability, the stability document required by subsection (3) shall be corrected to indicate the new stability characteristics of the ship as approved by the Board.
(7) Stability tests may be dispensed with if basic stability data is available from the stability test of a sister ship and if it is shown to the satisfaction of the Board that reliable stability information can be obtained from such basic data.
(8) Except in the case of ships of Class I or Class II, the Board may allow the stability test to be dispensed with in exceptional circumstances if it can be shown to the Board’s satisfaction that owing to the form, construction and arrangement of the ship, stability calculations can safely be made without the stability test being conducted.

Watertight Doors for Bulk Cargo Vessels to which Inland Waters Certificates are Issued

[

1987, c. 7, s. 84(F)

]

82 (1) Where a bulk cargo vessel, the keel of which was laid on or after March 22, 1967 is constructed with side tunnels, the access to the side tunnels shall be from within a deckhouse or companionway on the upper deck and not through the watertight bulkhead at the forward end of the after machinery space nor through the watertight bulkhead at the forward end of the No. 1 cargo hold.
(2) Where a bulk cargo vessel, coming under inspection for the first time, is constructed with side tunnels, the requirements of subsection (1) shall be complied with, unless it is shown to the satisfaction of the Board that compliance with those requirements is impracticable.
(3) Where a bulk cargo vessel, the keel of which was laid before March 22, 1967 is constructed with side tunnels, the means of access thereto shall be to the satisfaction of the Board.

Cargo Ports and Other Large Access Openings in the Ship’s Side and Superstructure

82.1 (1) Subject to subsection (2), sections 82.2, 82.3 and 82.4 apply to every Canadian ship
- (a) of which the keel is laid,
- (b) of which construction of the hull is commenced,
- (c) that is registered as a Canadian ship, or
- (d) that is modified or converted
on or after October 1, 1981.
(2) Sections 82.2, 82.3 and 82.4 do not apply to a Canadian ship
- (a) of which the keel was laid,
- (b) of which construction of the hull was commenced, or
- (c) that was registered as a Canadian ship
before October 1, 1981, where the Canadian ship is modified or converted on or after October 1, 1981 if, in the opinion of the Board of Steamship Inspection, it is impracticable to comply with those sections.
(3) Notwithstanding subsection (2), on or after October 1, 1982, subsections 82.2(3) and (4), 82.3(2) and 82.4(2) to (4) apply to every Canadian ship.

SOR/81-86, s. 2
SOR/81-709, s. 1

82.2 (1) In every ship the number of cargo ports and other access openings in the shell below the bulkhead deck shall be the minimum compatible with the design and proper working of the ship and each such opening shall be fitted with approved closing appliances so constructed as to maintain the structural and watertight integrity of the structure surrounding such opening.
(2) The lower edge of every opening referred to in subsection (1) shall not be below a line that is drawn parallel to the bulkhead deck at side and that has as its lowest point the level of the deepest operational draught at midships.
(3) Subject to subsection (4), every opening referred to in subsection (1) shall be provided with a sensing device that will activate the following indicating devices in the wheelhouse:
- (a) a green light that remains continuously lit as long as the closing appliance on the opening is closed and effectively secured; and
- (b) a flashing red light and associated audible alarm that operate concurrently when leakage from the opening is detected by the sensing device.
(4) Paragraph (3)(b) does not apply to an opening that is located in an accessible area of a continuously manned space.

SOR/81-86, s. 2

82.3 (1) Where any cargo ports and other access openings above the bulkhead deck are located
- (a) in the ship’s side, or
- (b) at an exposed location on an enclosure and the enclosure protects any openings in the bulkhead deck that are not fitted with weathertight closing appliances,
the number of such cargo ports and other access openings shall be the minimum compatible with the design and proper working of the ship and each such opening shall be fitted with approved closing appliances so constructed as to maintain the structural and weathertight integrity of the ship’s side or that enclosure.
(2) Every opening referred to in subsection (1) that is located in the first tier of superstructures above the bulkhead deck and that has a clear opening of more than 1.5 m² shall be provided with a sensing device that will activate a green indicator light located in the wheelhouse, which light remains continuously lit as long as the closing appliance with which the opening is fitted is closed and effectively secured.

SOR/81-86, s. 2

82.4 (1) Every closing appliance required by section 82.2 or 82.3 shall be designed to open outwards and shall be provided with positive structural support against external pressure.
(2) A power available indicating device shall be provided to confirm the operational readiness of every sensing or indicating device required by section 82.2 or 82.3.
(3) Every sensing device and every indicating device required by section 82.2 or 82.3 shall be tested at intervals no greater than the intervals between each boat and fire drill and the master shall ensure that the particulars of each test are entered in the ship’s log.
(4) Notwithstanding the arrangements required by sections 82.2 and 82.3 and subsections (1) to (3) of this section, alternative arrangements may be made if such alternative arrangements are at least as effective as the arrangements so required.

SOR/81-86, s. 2

Non-structural Tanks

83 The requirements for fuel oil tanks that do not form an integral part of the ship’s structure and have a capacity of more than 4 500 L are as follows:

(a) the outside plating shall be fitted with stiffeners so that the area of the unsupported flat surface of a plate whose thickness is set out in column I of an item of the table to this section does not exceed the area set out in column II of the item;
(b) the following shall be fitted to each tank, namely,
- (i) wash plates, if required,
- (ii) doublers or striking plates, under all sounding pipes,
- (iii) in the case of riveted construction, drip trays, and
- (iv) manholes whose covers are secured by 16-mm studs spaced apart at a distance of 70 mm or less, centre to centre;
(c) if drains are fitted, they shall be of the weighted-lever or other self-closing type;
(d) every air pipe to a tank shall
- (i) be carried well above deck,
- (ii) have an outlet that is
  - (A) in a safe location, and
  - (B) fitted with readily removable wire-gauze screens, the total area of clear opening of the screens being not less than the cross-sectional area of the air pipe, and
- (iii) have a net area that
  - (A) in the case of a tank that can be filled by the ship’s pumps or by shore pumps, is greater than the effective area of the corresponding filling pipe by at least 25 per cent; and
  - (B) in any other case, is at least equal to the effective area of the corresponding filling pipe; and
(e) on completion of its fitting, every tank shall be tested in the presence of a steamship inspector by filling it with water to a head that is equal to the maximum head to which the tank will be subjected or a head of 2.44 m above the tank crown, whichever is greater.

TABLE

Item	Thickness of Plate (mm)	Unsupported Flat Surface Area (m²)
	Column I	Column II
1	5.00	0.56
2	6.50	0.84
3	8.00	1.12

SOR/95-254, s. 7
SOR/2002-220, s. 3

Date modified:: 2024-12-10

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Hull Construction Regulations (C.R.C., c. 1431)

PART III[Repealed, SOR/2017-14, s. 402] (continued)

PART IV[Repealed, SOR/2017-14, s. 402]

PART V[Repealed, SOR/2017-14, s. 402]

PART VI[Repealed, SOR/2017-14, s. 402]

PART VIIPassenger and Non-passenger Ships

Interpretation

Application of Part

Stability in Undamaged Condition

Watertight Doors for Bulk Cargo Vessels to which Inland Waters Certificates are Issued

Cargo Ports and Other Large Access Openings in the Ship’s Side and Superstructure

Non-structural Tanks