Side scuttles for ships are used for sea-going ship and warships also could used for inland ship: Type Size Of clear mm Opening Installtype Codeof material made up Opening the deadlight Glass Use opening fixed bolted welding Heavy A 200 250 300 350 400 LR S N (B)(W) 112 212 222 (G) (J) Transparent (Y1) Frosted (Y2) Allowing the place which below sea ship bulkhead deck or freeboard deck and also above the waterline is water-tight and air-tight. Medium B 200 250 300 350 400 450112 222 333212 222 233 Side edges or ends of the superstructure above passenger ship bulkhead or freeboard deck. The superstructure sides and end of the first layer above the freeboard deck of non-passenger ship bulkhead. Light C L R 220 330 110 210 220 230 --- The side and back-end layers of the first layer and others above it of the superstructure above the passenger ship bulkhead or freeboard deck. The side and back-end layers of the first layer and others above it of the superstructure above the non- passenger ship bulkhead.