Richelieu, French ironclad: dimensions and metacentric height

Riders, diagonal, for wood and composite ships.

Rigging, strains sustained by ..

River steamers, shallow-draught: special features of

Rolling of ships in still water :-

Oscillations resemble those of pendulums

Hypothetical case of unresisted rolling
Effect of moment of inertia upon

Instantaneous axis of rotation

:

:

Effect of changes in stiffness and distribution of weights
Dipping oscillations which accompany

Effect of resistance upon ..

Still-water experiments on

Rolling of ships among waves:-
Early theories

Governing conditions of

Importance of ratio of wave period to period of ships
Behaviour of quick-moving ships

of slow-moving ships..

Sketch of modern theory

Dangers of synchronism of periods of ships and waves

:

:

:

428

434

453

458

459

462

Effects of changes in speed and course of ships..

Steadying effect of sails

..

Strains on structure due to

Strains on rigging due to

Methods of measuring angles of (see Observations of Rolling).

Run of ships: connection between speed of ships and length of
fineness of, essential to efficiency of screw-steamers
effect of form upon rudder pressure

Rupert, her Majesty's ironclad ram: watertight subdivision
Russell, Mr. Scott:-

Longitudinal system of framing iron ships.

Wave-line theory of resistance

Rules for paddle-wheels

Rule for rudder area

..

Areas and forms of rudders

Sarah Sands: preserved from destruction by fire
Scarphs of various pieces in wood ships

'Scending (see Pitching).

Schlick, Herr: experiments on screw-ship steerage..
Schooners: plain sail of

Virtual increase of resistance produced by
Compared with water-jets

Compared with paddle-wheels
Large diameters advantageous
Use of twin and multiple

Necessity for free flow of water to
Effect of propeller race upon steerage

Motion of particles in race

Manoeuvring powers of single and twin

Screws, steering: modes of fitting

Sepping, Sir Robert: introduction of diagonal riders

496

502

504

500

573

Serapis, Indian troop-ship: curve of stability and principal dimen-

difficulty of steering

Shearing strains on ships, unimportant

Sheer strakes, useful as longitudinal strengtheners
Shift of butts for planking and ribs of wood ships

..

Smyth, Piazzi, Professor: gyroscopic instrument for measuring rolling
Speeds of unarmoured war-ships and ironclads

lengths of entrance and run appropriate to
Spirit-levels, not trustworthy means of measuring rolling

Effect of suddenly applied forces measured with reference to
Reserve of

Affected by shifting cargoes and free water in hold

Effect of adding or removing weights

Effect of raising or lowering weights
Of ships partially waterborne

Atwood's formula for

Construction and use of curves of

..

Amongst waves, reckoned from normal to effective slope

Range of stability required for safety

Effect of heaving motion upon

..

Increased by lengthening still-water period of ships

Assisted by deep bilge-keels

Assisted by sails ..

Lessens transverse straining

:::

:::::

PAGE

485

:::

495

493

495

298

310

Steam-ships:

Register tonnage of

Progress in construction of

Ordinary conditions of design

Measures of engine-power

Estimates of speed and engine-power
Engine-power and speeds of various classes
Economical propulsion of

Steering-screws, proposed use of

Steering trials: initial motions of ships

Stern: strengthenings, of in wood screw-steamers

effect of length and form upon resistance

..

fineness of form required for screw propulsion

Sternway, steerage of ships having

Stiffness: definition of

measured by metacentric height

effects of form and stowage of ships upon

effect of variations in, upon periods of oscillation
measure of power to carry sail

Stowage of weights or cargo: effect upon stability
proposal to check by rolling experiments
effect of, upon longitudinal bending moments

306

442, 448

538

573, 576

65

66

72

113

500
81, 84

259

260

272

280

:

283

:

::

285

286