1 Every portable fish hold division shall be fishtight and shall extend from the bottom of the hold to the deckhead, with due regard to the loading and unloading of the vessel.
2 Provision shall be made to allow water to drain into the bilge, and bilge suctions shall be adequately protected to prevent clogging.
3 Portable penboards shall be installed in such a manner as to prevent dislodgment when fish are being pumped into and out of the hold.
5 Every portable fish hold division shall be installed in such a manner as to prevent overloading or excessive trim, and to the satisfaction of the inspector.
6 Where an aluminum penboard or stanchion is installed,
7 (1) Where fishhold divisions consist of steel uprights and horizontal wooden boards as illustrated in figure 1, the scantlings thereof shall meet the requirements stated in the formulae set out in subsection (2).
(2) The formulae for vertical steel uprights and horizontal wooden boards are as follows:
(a) minimum section modulus of every vertical steel upright,
z = 4psbh2;
(b) minimum actual finished thickness of every horizontal wooden board,
t = sqrt 8psb2; and
(c) in the above formulae,
- z =
- section modulus, in cubic centimetres
- t =
- thickness of wooden board, in centimetres
- p =
- density of cargo, in tonnes per cubic metres
- s =
- maximum transverse distance between any two adjacent longitudinal divisions or line of supports, in metres
- h =
- maximum vertical span of a column taken to be the hold depth, in metres
- b =
- maximum longitudinal distance between any two adjacent transverse divisions or line of supports, in metres.
(3) The formulae set out in subsection (2) shall be applied subject to the following conditions:
(a) where a longitudinal fish hold division is athwartship, the formulae shall be modified by interchanging s and b;
(b) when it is known that a longitudinal or a transverse division will always be loaded on both sides, reduced scantlings may be accepted by the inspector;
(c) if a vertical steel upright is permanent and well connected at both ends to the structure of the vessel, reduced scantlings may be accepted by the inspector; and
(d) the timber used for a wooden fish hold division shall be of sound durable quality, and of a type and grade that has been proved satisfactory for a fish hold division.
FIGURE 1Horizontal Wood Boards — Steel Uprights
GRAPHIC IS NOT DISPLAYED, SEE SOR/78-918, S. 7
- SOR/78-918, s. 7
- SOR/79-903, s. 4
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