Cover patented by J. W. ISHERWOOD; basic principle consists in replacing of wood hatches by plate hatches of mild steel, each plate being flanged on sides and ends, and stiffened against deflection by means of two or three longitudinal corrugations; applicable to new and existing vessels alike.
Isherwood steel hatch cover
Shipbldr. Mar. Engine-Bldr
Shipbuilder and Marine Engine-Builder ; 38 , n 249
1931
2 pages
2 Figs.
Article (Journal)
English
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