DECIMAL CLASSIFICATION 
623.8 Naval architecture Boatbilding 
Including warship accessories. Class here comprehensiv works on shipbilding, 
Subdivide with co1-009 and 02-09 like 620. For ship design and theory see 
623.81 Design; for principles of flotation see 532.3 Floating bodies 
General Design 
Class here also separate discussion of such general questions as flotation, dis. 
placement, stability, strength, resistance, propulsion and design; i. e. speed and 
power, coal endurance and steaming radius, passenger or cargo capacity, etc. 
Types of ships and boats 
Primitiv and early forms 
Rafts, catamarans, dugouts; galleys 
Modern sailing vessels 
Caravels, sailing yachts, etc. 
See also 797.14 Yachting; 623.824 Power yachts 
Engin driven vessels 
Steam, internal combustion, electric, ete. 
Tugs and lighters 
Ferry boats: passenger, freight and train 
Passenger and cargo vessels 
River, lake or ocean liners; power yachtg etc. For tugs, ferryboats, 
small motor boats, etc. see 623.823 
Warships 
Fighting vessels: battleships, cruisers, gunboats, monitors, torpedo boats, 
submarines. For sailing men-of-war see 623.822 
Other government vessels 
Transports, hospital ships, store and fuel ships (supply. food, refrigera. 
tion, ammunition ships; colliers, oilers, mineplanters, ete.) repair ships, 
lightships and lighthouse tenders, police boats, revenue cutters, fish 
commission boats, fireboats, etc. 
Other power vessels 
Ships for cable laying, icebreakers, trawlers, ete. For dredges see 627.7 
Other boats 
Flatboats, scows, lighters, canal boats, barges, rowboats and canoes, life 
boats, surf boats 
Appliances peculiar to shipbilding 
Model tanks and experiments, including also Froude's tests on full size ships; 
launching ways and launching; dry or graving docks; moldloft and scriveboard 
Hull and its accessories 
Structural: watertight compartments; systems of construction (wood, com 
posit, iron and steel), structural details (framing, bulkheds, etc.) 
Nonstructural: joinery, nonstructural decks 
Hull accessories: masts and spars; rudder and steering 
gear; drainage, etc. 
Lighting, ventilating, heating, refrigerating; electric plant and lighting 
for ship installation only; see also 621.3 Electric engineering 
Ship fittings: doors, hatches, etc. 
Equipment and outfit 
Superadded, not bilt in, but necessary for effectiv use of ship 
Sails and rigging; anchors, chains, cables, hawsers; compasses, sounding 
machines, speed logs; boats, rafts, life preservers, buoys 
Furniture, saloon and cabin furnishings; table and galley (kitchen) outfit 
See also domestic economy, 645 
Propelling machinery 
Vibration and balancing. For theory of propulsion see 623.81 
See also 621.12 Marine engins; 621.165 Steam turbins; 621.18 Boilers 
Armor and armament 
Distribution, armoring; proper hight, ete; battery 
For manufacture of armor plate see metallurgy, 669.1 Iron and steel 
Torpedoes Launching tubes and other accessories 
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