Two Centuries of Shipbuilding by the Scotts at Greenock

by Scotts' Shipbuilding & Engineering Co. Ltd.

Name.	Date of Completion.	Displacement.	Side Armour.	Speed.	Total Weight of Shot in One Round.	Collective Energy at Muzzle of One Round.
		tons	in.	knots	lb.	foot-tons
Warrior	1861	9,210	4-1/2-in. wrought iron	14-1/2	3800	61,476
Hercules	1868	8,680	9-in. to 6-in. wrought iron	14	5400	70,200
Alexandra	1877	9,490	12-in. to 6-in. wrought iron	15	5426	71,400
Inflexible	1881	11,880	24-in. to 16-in. wrought iron	13	6936	123,120
Benbow	1888	10,600	18-in. compound	16.75	4600	135,560
Royal Sovereign	1892	14,150	18-in. and 5-in. compound	17.5	5800	159,610
Barfleur	1894	10,500	12-in. compound	18.5	2450	67,670
Canopus	1900	12,950	6-in. hardened steel	18.25	4600	178,720
Prince of Wales	1902	15,000	9-in. super-hardened steel	18.25	4600	194,400
King Edward VII.	1904	16,350	9-in. super-hardened steel	18.50	5920	270,040
Lord Nelson	1905	16,500	10-in. super-hardened steel	18.50	7960	413,900

As to the machinery made by the Scotts for these battleships, the Barfleur had three-cylinder, triple-expansion twin-screw engines, to run at 108 revolutions, and to develop 13,000 indicated horse-power. On her trials the power was 13,163 indicated horse-power. There are eight single-ended, return-tube, cylindrical boilers, working at 155 lb. pressure. Other details are given in the Table on page 53.

The engines of the Canopus are illustrated on page 49 by a drawing taken from a Paper read at the Institution of Civil Engineers, by Sir John Durston and Admiral H. J. Oram.[64] This was the first type of British battleship fitted with water-tube boilers. She was followed soon after by the Prince of Wales.[65]

The Argyll, which was built and engined by the Scotts, and the Defence, which is being built in one of the Royal Dockyards, and is having its machinery constructed by the Scotts, signalise progress in cruiser design. The hardening of armour, increasing its resistance, permits of a reduction in weight for a given measure of protection, so that it has been possible to effectively defend the modern cruiser, while at the same time giving an enormously increased gun-power and a speed far in excess of that possible ten years ago. The Argyll is a vessel of 10,850 tons displacement, being 450 ft. long, 68 ft. 6 in. beam, and having a draught of 25 ft.; while the Defence is a vessel of 14,600 tons displacement, having a length of 490 ft., a beam of 74 ft. 6 in., and a draught of 26 ft. In both ships the greater part of the broadside, from 5 ft. below the water-line to the upper deck, is armoured, and a very large proportion of the area thus clad has 6-in. hardened plates.

Plate XX.

PROPELLING ENGINES OF H.M.S. "ARGYLL."

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