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INDEX

Admiral class, armour of, 140

, metacentric height, 195

Air escapes for Hooding, 105

Air plugs in manhole covers, 55, 105

Angle of maximum stability, 213

of vanishing stability, 213

Annealing of steel plates, 12
Anti-corrosive paint, 118
Anti-fouling paint, 124
Area of curvilinear figures, 159

of rectangle, etc., 159

Armour bars, 154

bolts, 157

, compound, 140

, figure of merit, 138

, Harveyed, 142

, Krupp, 145

protection, 135

scuttles, 158

, wrought-iron, 137

Arrogant, section, 33

, stern, 79

, turning, 241

Astraa, turning, 241
Automatic doors, 72
Automatic valves, 70
Auxiliary steering gear, 95

Backing, teak, behind armour, 155
Balanced rudders, 82
Battens for observing rolling, 233
Battle-ships, sections of, 20-22

, framing of, 23, 24

, plating of, 50

Beams, construction of, 38

, strength of, 1

, support to, 41

Beck's automatic valve, 70
Btllerophmi, protection of, 137
Bilge keels, action of, 225

, construction of, 227

Bilged compartment, sinkivgc due to, 178

, change of trim due to, 210

Black Prince, protection of, 151
BM, longitudinal, 204

——, , approximation to, 204

BM, transverse, 184

, , approximation to, 184

Board margin, 167, 266
Bolts to armour, 157

to sheathing, 122, 123

to wood deck, 48

Bottom plating, 50

Bracket frame, 24
Breadth of ship, definition of, 166
Broadfoot automatic valve, 70
Bulkhead armour, construction of, 14C
Bulkheads, numbering of, 64

, watertight, 60

Bulwark class, protection of, 147
Buoyancy, 170

, centre of, 180

, reserve of, 177

Butt fastening for wood deck, 47
Butts, laps, etc., of plating, 18

Calculations for area and volume, 159

Canopus class, protection of, 146

Capacity of pumps in a battle-ship, 97

Captain, stability of, 213

Carlings, 40

Cast steel, tests of, 14

Caulking sheathing, 123

steel plates, elc, 19

wood decks, 48

Cement, 125

in bolt holes of sheathing, 123

Centre of buoyancy, 180

, influence on stability, 187

of flotation, 204

of gravity, 180

Chambers, water, to diminish rolling, 227

Change of trim, 204

Circle, area of, 159

Circles, turning, 237

Clutches to steering gear, 94

Coal bunkers, ventilation of, 109

Coal stowage as affecting stability, 197

Coaling of ships, 127

Coefficient of fineness 174

Cofferdam bulkhead, CO

Cofferdams, 155

Collision bulkhead, 60

Comparison, law of, 252

Composite system, 120

Compound armour, 140

Conditions of equilibrium, 181

of stable equilibrium, 183

Copper sheathing, 120

Cork cement, 126

Corresponding speeds, 249

Corrosion, 117

Corticine for decks, 48

Countersinking, 16

County class of cruisers, protection of, 151

Crank ship, steadiest in a seaway, 230

Creuy class, protection of, 150

—— , turning of, 241

Cruiser, first class, construction of, 28

, watertight subdivision, 67

Cruiser, third class, construction of, 33

— , watertight subdivision, 69

Cruisers, protection of, 149
Curve of displacement, 173

of horse-power, 245

of stability, 213

of tons per inch, 174

Damaoe, change of trim due to, 210

, sinkage due to, 179

Deck planking, 46 plating, 44

protection, 136

Deep load condition, definition of, 107
Design of war-ships, 261
Destroyer, framing of, 37

, plating of, 58

Devastation, protection of, 137

Diadem and Powerful, comparison of

1.11.P., 251
Diadem, section of, 80

, turning of, 211

Difference of draught, salt and river water,

176
Displacement, 171

curve of, 173

Diverging waves, 248

Docking, conditions of stability, 200

Doors, watertight, automatic, 72

, , hinged, 65

, , horizontal sliding, 69

, , quick-closing, 66

, , vertical sliding, 66

Double bottom, access to, 64

, flooding of, 104

, pumping from, 101

, value of, 21

, ventilation of, 112

Dowel in deck planking, 48
Downton hand pump, 101
Drainage, 97

Drake curves of I.H.P. and revolutions,

245

protection of, 151

Draught, change of, due to different density

of water, 176

, light, normal, deep, 167

Dry dock flood to magazines, etc., 106
Duke of Edinburgh, protection of, 151
Duncan class, protection of, 147

section of, 21

Dynamical stability, 216

Ei>r>Y making resistance, 217
Edgar, effect of shallow water on speed,
258

, section, 29

Edge laps, 18

strips, 18

Effective horse-power, 246

Elastic cup washer to armour bolts, 157

Equilibrium neutral, 182

stable, 182

unstable, 182

Enrydiee, stability of, 217
Exfoliation of copper sheathing, 130

Figure of merit of armour, 138

Fire main, 107

First class battle-ship, construction of, 21

, shaft brackets, 85

stem, 75

stern, 78

• cruiser, construction of, 28

, rudder and stem post, 83

, watertight subdivision, 57

Flood valve, 104

Flooding of double bottom, 104

of magazines, 106

of wing compartments, 105

Formidable class, protection of, 147

Fouling, 120

Framing of battle-ship, 21

of destroyer, 37

of first class cruiser, 30

of second-class cruiser, 32

of sloop, 36

of third class cruiser, 34

Freeboard, influence on stability, 215

of merchant ships, 178

French war-ship, section of, 145
Frictional resistance, 247

to rolling, 225

Froude's experiment with Greyhound, 243 law of comparison, 262

Galvanic action, a cause of corrosion, 119

Galvanizing, 118

Greyhound, towing experiments on. 243

Grummets, 48, 123

Gunmetal composition, 119

Half beams, 40

Harfield's steering gear, 89

Harvey process of manufacturing armour,

142
Hatchways, 40
Heel caused by flooding wings, 196

by turning, 235

Hinged watertight doors, 65

Hogging, 4

Horse-power, definition of, 246

, effective and indicated difference

between, 246

indicated, curve of, Drake, 245,

, -, Powerful and Diadem, 251

Hyacinth and Juno comparison, 270

Inclining experiment, 190
Indianibber washers to armour bolts, 157

to watertight doors, 66

Indicated horse-power, definition of, 246

, Drake, curve of, 245

, estimates of, 253

Powerful and Diadem compared,

251
Inflexible protection, 138
-^— stability, 195
Initial stability, 182
Inner bottom, construction of, 54

, corrosion of, 125

, manholes in, 55

Inspection of watertight doors, 71

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Insulation of copper sheathing from hull,

1 '1'3
Intercostal framing, 24
Isochronous rolling, 224

Joints, lap and butt, 18
"To and Hyacinth, comparison, 270

Keel, flat plate, 52

, vertical, etc., of battle-ship and cruiser
compared, 4

— , vertical, 23
King Edward VII., armour, etc., 149

, section, 22

, shape of stern, 79

Kingston valve, 103
Krupp armour, 145

!■ joints, 18
Latitude in weight of steel, 12
Leak, rate of inflow of water, 96
* ■ 'ifrtli of ship, definition, 166
'.■■njcth, influence of, as regards economy of
1 impulsion, 250
Light condition, definition of, 167

, stability, 192

'. :.«!. deep, condition, definition of, 167

, stability, 192

""»d, normal, condition, definition of, 167

_ stability, 192

Local strains, 8
Log, stability of, 186
M-,itudinal bulkheads, 62

- framing, 22

metacentre, 204

metacentric height, 204
strength of ships, 3
system of construction, 6

\

I.azines, flooding of, 105
, ventilation of, 116
"yrtita, stability of, 218
Main drain, 97

• .• stic class, armour, 142

through Suez Canal, 208

".lil'ick's rolling indicator, 232
. .hole through bulkhead, 55

to double bottom, 54
.:uial power for steering, 92

-ured-mile trials, 256
'juration, rules of, 159
Merchant steamers, stability of, 195

■centre, longitudinal, 204

, transverse, 183
■ icentric diagram, 187

, shapes of, for various ships, 193

Metacentric height, longitudinal, 204

, transverse, 183, 195

; icentric locus for different ships, 188
Miantonomah, stability of, 218
I 1 steel, tests of, etc., 10
Mill scale, removal of, 13

• •mint of inertia of area about an axis,
Hi

of weight about an axis, 223

Moment to change trim 1 inch, 206

, approximation to, 206

. firch, stability of, 214

Narrow belt, disadvantages of, 144
Naval brass, composition of, 122
Navy List displacement, 166
Neutral axis, definition, 6
Neutral equilibrium, definition of, 182
Non-return drain valve, 104

and flood valve, 103

Normal load draught, 167

Observations of rolling, 231
Ollis's steering gear, 91
Orlando, turning of, 240
Oscillations of ships, 222
Outer bottom plating, 50

Panting, 8

Period of rolling, 223 .

, different ships, 225

Phosphor bronze castings, tests, 14

, composition of, 15

Pickling of steel plates, 13
Pillars, fixed, 41

, portable, 43

Pitch of rivets, 19

Powerful and Diadem, comparison of I.H.P.,

Preservation of ships, 118
Progressive speed trials, 256
Propulsive coefficient, 247
Protection of ships, 135
Protective decks, construction of, 45
Pumping and flooding, 96 capacity of large ship, 97

Questions, 279

Radius of gyration, 223
Range of stability, 213
Rapson's slide steering gear, 87
Rectangle, area of, 159
Reserve of buoyancy, 177
Resistance of ships, 243

to rolling, 225

Resisted rolling in still water, 225
Rivet steel and rivets, tests, 13
Riveting in outer bottom, 52
Rivets and riveting, 16
Rolling among waves, 229

in still water, 222

"Rosbonite " for fresh-water tanks, 126

Royal Arthur, stability of, 218

Royal Sovereign, armour protection of, 141

, midship section, 20

, stability of, 218

, supports behind armour, 155

Rudders, 80
Rust, 117

Sagging, 4 Screw steering gear, 91 Screw-down, non-return, and flood valve, 103
Screw-down valve, 103
Sections of steel, 15
Sentinel &nd.Topazc, comparison, 270
Shallow water, influence on speed, 258
Shaft brackets, 85
Sheathed ships, planking of, 122 , one thickness, 123

Sheathed ships, two thicknesses, 122
Sheathing, cost of, 124
Shift of butts, 50
Simpson's rule for areas, 1G0
Siukage of vessel due to damage, 178 due to passing from sea to

river water, 176
Solid plate frames, 24
Spacing of rivets, 19
Spare gear to steering gear, 94
Speed of ships on measured mile, 256
Splinter nettings, 155
Stability, curves of, for various ships, 217

, dynamical, 216

, initial, 180

, statement, 221

, statical curve of, 212

Stable equilibrium, definition of, 182
Steadiness of ship at sea, 230
Steam steering gear, 92
Steel castings, tests of, 14

, high tensile, 11

, sections of, 15

, tests of, 11

Steering by manual power, 92

by steam, 92

Steering gears, 87

Stems, 73

Sternposts, 77

Sterns, shapes of, 79

Still water, rolling in, 223

Strength of ships, 1

Structural strains, 1

Submarine boat, stability of, 210

Suez Canal, passage through, of large ships,

208 , tonnage, 169

Tests for rivets, etc., 13

for steel plates, etc., 11

for strength of bulkheads, 64

for watertightness, 64

Temeraire, protection of, 137
Temperley transporter for coaling, 128
Third class cruiser, construction of, 33
Tonnage, 168
Tons per inch immersion, 173

, approximation, 174

Topaze and Sentinel, comparison, 270
Transverse bulkheads, 60

framing, amidships, 24

, ends, 27

metacentric height, 183

for various classes, 195

strength, 8

system of construction, 33

Trapezoid, area of, 159
Trapezoidal rule, 159
Treatment of mild steel, 12
Trials of H.M. ships, 168, 256

on measured mile, 256

Triangle, area of, 159
Trim, change of, 204

, moment to change, 1 inch, 206

Triumph, H.M.S., stability of, 195, 218
Tumble home, effect on stability, 219
Turning of ships, 234

trials in Royal Navy, 242

Twin screw ship, turning of, 241

Unresisted rolling in still water, 223
Unstable equilibrium, 182
Upper deck of a cruiser, 43

Valve, screw-down, 103

, screw-down, non-return, and flood,

103 Ventilation, artificial, 109

, natural, 109

of coal bunkers, 109

of magazines, 116

of spirit room, 109

with motor fans, 115

steam, 112

Victoria, closing of watertight doors, 72 , loss of, 272

Warrior, armour of, 135

Washer, elastic cup, to armour bolts, 157

Water-chambers, 227

Water, density of, 172

, difference of draught salt and river,

176 Water-testing for strength of bulkheads, 64 Watertight bulkheads, 60 Watertight doors, hinged, 65

, horizontal sliding, 69

, vertical sliding, 67

flats, 46

frames, 24

hatches, 49

inner bottom, 54

subdivision, 57, 59

Watertightness, 64

Wave making resistance, 218

Wave, ship on, 4

Waves, rolling among, 228

Wood backing, 155

decks, 46

sheathing, 122

Zino protectors, 119

THE END.

TAINTED Br WILLIAM CLOWES AND SONS, LIMITED, LONDON AND BECCLES.

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