27 | Material protection, external |
276 | Galvanizing, nickel plating, metallizing |
278 | External cathodic protection |
28 | Material protection, internal |
288 | Internal cathodic protection |
443 | Painting equipment, scaffolding, paint rafts/boats (gigs) |
52 | Internal deck covering, ladders, steps, railing |
53 | Ext. deck covering, ladders, steps, fore, aft gangway |
63 | Propellers, transmissions, foils |