Used as basis for calculations of performance under steam of

H.

Head resistance, to motion of bodies through water..
Headway, advantage to ships in turning

Heaving of ships among waves

..

..

:

Accidental collision with Northumberland
Principal dimensions and metacentric height

Period of still-water oscillation

Behaviour at sea

Racking forces due to rolling
Steaming capabilities
Rudder arrangements

Steering trials of ..

conditions of strain incidental to

..

indicated

nominal

..

..

34

66, 73

105

Independenzia, Brazilian ironclad: stoppage in launching
Inflexible, her Majesty's ship:-

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PAGE

32

90

3

370

368

419

424

4

14

67, 72

101

Juno, her Majesty's ship: dimensions and curve of stability

394, 416

..

409

410

395, 398

421

115

521

573, 612

602
573, 601

Lord Warden, her Majesty's ship: behaviour at sea

Lumley, Mr.: his plan of rudder
Lurching: strains consequent upon
Lutschaunig, Herr: his steering screw

..

:

..

Mallet, Mr.: his experiments on the corrosion of iron
Marengo, French ironclad: metacentric height
Mary, merchant steamer: lost by cross-breaking
Masts, stations of, in sailing vessels

proportion of sail carried by each of the

Materials for shipbuilding (see Iron, Steel, Wood).

Megæra, her Majesty's ship: rate of corrosion of skin and loss of 400, 416

Mr. Froude's experiments on model of, and alternative forms 451, 459

Merrimac: use of ram in her fight with the Monitor

Metacentre for transverse inclinations:---

Approximate rules for estimating position of

Change of position due to entry of water into the hold
Motion during rolling

: