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Fishing Vessel Safety Regulations (C.R.C., c. 1486)

Regulations are current to 2019-11-19 and last amended on 2017-07-13. Previous Versions

SCHEDULE II(s. 23)

1. Normal Hatch Covers Fitted Athwartship or Fore-and-aft

Unsupported length in millimetresThickness in millimetresLanding (on coamings) in millimetres
9153838
1 0654438
1 2205050
1 3705750
1 5256350
1 6756765
1 8307065

Spans in excess of 1 830 mm to be fitted with hatch beam or fore-and-after.

2. Wooden Hatch Beams and Fore-and-afters of Rectangular Cross Section

The scantlings of rectangular cross section hatch beams or fore-and-afters, exclusive of tongue (if fitted), is obtained from the formula:

(B × D2) / 98 322 = (S × L2) / 113

where

B =
breadth of beam or fore-and-after, in millimetres
D =
depth of beam of fore-and-after, in millimetres
S =
spacing of beams or fore-and-afters, in millimetres
L =
length of unsupported span, in metres.

The following table shows size of wooden hatch beams or fore-and-afters in accordance with the above formula, for hatch openings up to 3 050 mm × 3 660 mm:

Size of hatch openingSize of beam or fore-and-after at centre
1 980 × 2 135125 × 180 (180 vertical)
2 135 × 2 135140 × 180 (180 vertical)
2 135 × 2 440140 × 205 (205 vertical)
2 135 × 2 745150 × 215 (215 vertical)
2 440 × 2 745150 × 230 (230 vertical)
2 440 × 3 050180 × 240 (240 vertical)
2 745 × 2 745180 × 230 (230 vertical)
2 745 × 3 050180 × 255 (255 vertical)
3 050 × 3 050180 × 265 (265 vertical)
3 050 × 3 355190 × 280 (280 vertical)
3 050 × 3 660190 × 305 (305 vertical)

The minimum bearing required at the ends of hatch beams or fore-and-afters is 75 mm.

3. Cambered Type Hatch Covers Fitted Fore-and-aft Only (in Sections)

Length of section in millimetresStiffener spacing of millimetresSize of stiffeners side × moulded in millimetresCover thickness millimetresLandings (on coamings) millimetres
91546040 × 502540
1 06553540 × 553040
1 22061045 × 653050
1 37068545 × 703550
1 52576045 × 754050
1 67556050 × 804065
1 83061050 × 904565

4. Hatch Coamings

Maximum length of coaming side or end in millimetresHeight of coamings above top of deck in millimetresThickness of coaming at deck in millimetres
WoodSteel
915305756
380756
455756
1 220305756
380756
455756
1 525305756
380806
455906
1 830305756
380806
455906
530956
6101006
2 135305756
380806
455908
530958
6101008
2 440305808
380908
455958
5301008
6101058
2 7453051008
3801058
4551158
53012010
61012510
3 05030514010
38014510
45515010
53016010
61016510

For hatches with coamings longer than 3 050 mm special consideration will be given.

Half beams in way of hatches, hatch end beams, carlings, hanging knees, lodging knees and pillars to be of ample strength and suitably arranged.

 
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