STEEL SMALL SIZE HATCH COVER

CB/T3728-2011

USED FOR SMALL SIZE HATCH COVER OF VARIOUS SHIPS,TO MEET ISO5778-1979.
Type of hatch cover
Type Name Structure characterstic Nominal size
A Single opening and closing weathertighr hatch cover Wing nut clip 450×630 830×830 530×530 830×1230 630×630 1030×1030 630×830 1330×1330
B Double opening and closing weather tight hatch cover Wedge handle buckle 450×630 830×830 530×530 830×1230 630×630 630×830
C Quick opening and closing weather tight hatch cover Center handles clip 530×530 Φ530×530 630×630 Φ630×630
D Flush type weather tight hatch cover Inverted wedge handle buckle 450×630 630×630 530×530 630×830
E Single opening and closing non weather tight hatch cover Wing nut clip 450×630 630×830 530×530 830×830 630×630
F Double opening and closing non weather tight hatch cover Wedge handle buckle 450×630 630×830 530×530 830×830 630×630

Type A hatch cover

Type A hatch cover
Type A hatch cover2
Nominal size L×B Clear size of opening L1×B1×R Cover size Coaming size Wing nut clip Counterbalance weight Weight
L1×B1 t stiffener to H Stiffener h D. Qty
450×630 420×600×100 508×688 4 —— 4,6   —— —— M16 4   24.4
512×692 6 6,8   31.1
516×696 8 8,11   37.7
530×530 500×500×100 588×588 4 4,6   24.2
592×592 6 6,8   30.8
516×696 8 8,11   37.4
630×630 600×600×100 688×688 4 60×6 4,6 L60×5 160 M20   31.2
692×692 6 6,8   40.8
696×696 8 8,11   50.5
630×830 600×800×100 688×888 4 80×6 4,6 L70×5 160   39.4
692×892 6 6,8   50.5
696×896 8 100×8 8,11   62.1
830×830 800×800×100 888×888 4 80×6 4,6 L80×6 180 6   52.1
892×892 6 6,8   66.2
896×896 8 100×10 8,11   80.3
830×1230 800×1200×100 888×1288 4 100×10 80×8 4,6 L80×6 180 8   85.2
892×1292 6 6,8   105.3
896×1296 8 120×12 80×8 8,11 800 88.0 107.1
1030×1030 1000×1000×100 1092×1092 6 100×10 80×8 6,8 L100×8 180 6 57.7 108.5
1096×1096 8 120×12 80×8 8,11 80.0 130.3
1330×1330 1300×1300×100 1396×1396 8 150×12 100×10 8,11 8 116.0 234.1
The hatch coaming in the bow 0.25L area shall be fitted with coaming stiffeners, whether the other regional hatch coaming are installed coaming stiffeners shall be determined by the chosen person. Note 1: The weight in the table does not include the weight of the coaming and the coaming stiffener. Note 2:Height and thickness of the coaming shall be determined by the selected person.