Showing posts with label navy. Show all posts
Showing posts with label navy. Show all posts

Sunday, October 12, 2014

French Ironclad Colbert

The central battery ironclad Colbert is one of the ten ships of the French navy that constitute the group ranking next in importance to the squadron of great turret ships, of which the Formidable is the largest. The group consists of six types, as follows:
274mm cannon in the armoured section of a Colbert class
ironclad, by Gustave Bourgain, circa 1885. 
  1. The Ocean type; three vessels; the Marengo, Ocean, and Suffren.
  2. The Friedland type, of which no others are built.
  3. The Richelieu type, of which no others are built.
  4. The Colbert type, of which there are two; the Colbert and the Trident.
  5. The Redoubtable type, of which no others are built.
  6. The Devastation type, of which no others are built.
Laid down in 1870, the Colbert was launched at Brest in 1875, and her sister ship, the Trident, in 1876. Both are of iron and wood, and the following are the principal dimensions of the Colbert, which apply very closely to the Trident: She is 321 ft. 6 in. long, 59 ft. 6 in. beam, and 29 ft. 6 in. draught aft. Her displacement is 8,457 tons, her indicated horse power is 4,652, and her speed 14.4 knots. She has coal carrying capacity for 700 tons, and her crew numbers 706. The thickness of her armor belt is 8.66 in., that protecting the central battery is 6.29 in. thick, which is also the thickness of the transverse armored bulkheads, while the deck is 0.43 in. in thickness.
the French ironclad war ship Colbert.
The Colbert-class was designed by Constructor Sabattier as an improved version of the ironclad Richelieu and they were the last ships authorized in the 1857 Naval Program. The class reverted to a single propeller shaft to improve sailing qualities and to lessen the chance of the propellers being fouled by fallen rigging. As central battery ironclads, their armament is concentrated amidships and consists of eight old 11 in. guns, two 9 in., six 6 in., four deck mounted torpedo tubes, and fourteen revolving and machine guns. Like most ironclads of their era, they are also equipped with a plough-shaped ram.
While the exact reason for such a prolonged construction time is not known, it is believed that reduction of the French Navy's budget after the Franco-Prussian War of 1870–71 and out-of-date work practices in French dockyards were likely causes.—Engineering.
Technical Specifications:
Class
Year
MS
Ram
Spd
Hs
Blt
Bty
Blk
Trt
Deck
Armament
CBI
1877
35
Y
2
6
3
3
2
Bow: 1o9, A: 1o9, FS: 1o11, BS: [3o11], 3o6; DT-4, 14QF

click image for a PDF copy of the ship chart.


Friday, September 19, 2014

HMS Imperieuse

WAR SHIPS OF THE BRITISH ROYAL NAVY.

RECENTLY COMMISSIONED-H.M.S. IMPERIEUSE
As an example of one of the latest additions to the Royal Navy, we give an engraving of H.M.S. Imperieuse. for which we are indebted to the Illustrated London News. The Imperieuse and her sister ship, the Warspite, were launched in 1883 & 1884, receiving their commissioning pennants in 1886 & 1888 respectively. The ships are designed as fast cruisers, carrying four heavy revolving guns in barbette towers, capable of being fired in any direction, besides six lighter guns. Each ship will be able to carry 900 tons of coal, and to steam at the rate of sixteen knots per hour. The ships are brig-rigged, with a large spread of canvas for cruising.
The dimensions of the ship are: Length, 315 feet; displacement, 7,300 tons; horse power, 8,000.Engineering
Technical Specifications:
Class
Year
MS
Ram
Spd
Hs
Blt
Bty
Blk
Trt
Deck
Armament
AC
1886
34
N
3
6
M5
-
4
4
4
F,A,P,S: [1x9B], FS,AS: 1x6B, BS:3x6B; BT-2, ST-2, MT-1, 4QF

Click image for a PDF copy of the ship chart.


Monday, September 15, 2014

HIJMS Kotaka

TORPEDO BOAT FOR THE JAPANESE GOVERNMENT.

THE JAPANESE NAVY'S SEA-GOING TORPEDO BOAT KOTAKA.
We give a photograph of the Japanese Government's new torpedo boat, HIJMS Kotaka, lately completed by Messrs. Yarrow & Co., of Poplar, which is of more than usual interest, as she is a distinct departure from the now stereotyped form of torpedo boat. Not only is she the largest that has hitherto been built, but she embodies several new features. The principal novelty is that vulnerable parts of the the vessel, including the machinery, are all protected by one inch steel armor which may be considered as an almost perfect defense against machine-gun fire, having in view the distance at which a torpedo boat attacks and the acute angle of fire at which it would be hit. The dimensions are 166 ft. long by 19 ft. beam, and she will be propelled by twin screws driven by engines indicating 1,400 horse power, from which a speed of nineteen to twenty knots, or about 23 miles an hour, maybe reasonably expected. The vessel has already been shipped in pieces to Japan, where she was put together; and if the trials come up to the expectations formed, there is no doubt that this type of torpedo boat will find much favor with many governments. For not only is good protection obtained, but the vessel, from her large size, offers great and very comfortable accommodation for the officers and crew, and is undoubtedly deserving of being considered thoroughly sea-going. How far the advantages gained by the one inch of steel armor will counter-balance the disadvantages of reduced speed and increased cost in consequence is for naval authorities rather than for engineers and shipbuilders to determine.
The Kotaka's armament consists of two torpedo tubes placed forward for direct firing ahead, the torpedoes being ejected by gunpowder. There will also be amidships and aft, on the deck, turntables, upon each of which will be mounted two torpedo guns, placed at an acute angle with one another and arranged for firing over the side. These guns, by being nearly, but not quite, parallel with each other, if fired simultaneously, will clearly very materially increase the probability of the vessel aimed at being hit. It is a remarkable fact that the Japanese were the first to introduce sea-going torpedo boats into their navy, Messrs. Yarrow & Co. having, some eight years ago, constructed a number of such craft for the Japanese Government, under the superintendence of Sir E. J. Reed. Again they have taken the initiative, in conjunction with Messrs. Yarrow and Co., in adopting a vessel of such an entirely new type and possessing such evident advantages over their predecessors. The Engineer.
Technical Specifications:
Class
Year
MS
Ram
Spd
Hs
Blt
Bty
Blk
Trt
Deck
Armament
TB
1888
(4)
N
3
3
-
-
-
-
-
BT-2, DT-4, 4QF

Click image to download a PDF copy of the chart.


Tuesday, August 19, 2014

How a Ship is Coaled

The operation of coaling is of course a matter of vital importance on board ship in these days of steam propulsion, but it is at the same time, to all concerned, one of the most trying and unpleasant of duties. That it is done cheerfully ad taken as "all in a days work"-being carried out where several ships are together in a spirit of the keenest rivalry, ship against ship as to which shall be done first and make a record--is another question. Briefly, this is what happens during coaling. The collier comes alongside, and the coal in its hold is placed in sacks by a party of bluejackets from the ship to be coaled, the sacks being then swung on board the battle-ship, where they are placed on barrows, wheeled to the coaling shoots, and emptied into the bunkers, to be finally trimmed and stowed away there in the smallest possible space. That is an outline of the process. In its details, coaling a battle-ship or cruiser involves a great many other things.
Coaling a battle-ship in harbour.
The first outward sign which shows that coaling a war-ship is, to say the least of it, a big business, is the covering up of all the breeches of the guns on board, large and small, the quick-firing guns and machine guns, with tarpaulins. After that comes the closing of all skylights and cabin ventilators, and all open spaces--except those required for the actual operation in hand--leading below from the upper deck. Practically the whole ship's company of all ranks and ratings, from quarter-deck officers to boys, take some part in coaling a ship, for which the officers turn out in their oldest and worst clothes. For the men a white coaling dress is provided out of a special allowance, known as the "C.D.B." The work begun, in a very short time the spotless upper deck and upper works of the beautiful man-of-war, whether battle-ship or cruiser, are completely transformed into a scene of grime and discomfort. The upper deck speedily becomes buried, from bow to stern, beneath a layer of coal dust, which insinuates itself everywhere and lodges itself in every nook and cranny. The bright barrels of the guns become smudged, and white paint everywhere looks grey. At the same time, down below particles of coal dust manage to find lodgment, floating in between decks and depositing themselves here, there and everywhere in thinner layers. To remain in the cabins or in the ward-room, should anyone be disposed to do so, is practically to court asphyxia, at the same time that, on the other hand, to be on deck means for everybody, from captain to cabin boy, the prompt undergoing of a transformation into the appearance of a coal heaver or of a Moore and Burgess Minstrel. It is difficult to recognize the smartest of officers in the dingy persons who are superintending the coaling parties. All in garb and face look like mourners in sack-cloth and ashes. So the work progresses, the coal coming on board in marvelous rapidity, sack after sack being whipped up over the side in endless succession, as it seems, until the last ton required has been safely received, trundled to the shoot, and stowed away and trimmed in the bunkers.
Bluejackets moving coal from the collier.
Cleaning the ship after coaling.
After that comes the cleaning up both of the men themselves and of the ship, during which latter process, fore and aft, the whole vessel becomes filled with a sound of rushing waters, the upper decks being flooded, while the scuppers run like brooks as the dust and dirt of an hour ago is swept into the sea in rushing torrents of water. The ship is washed and scrubbed throughout from end to end, the barefooted bluejackets working with such will that in a wonderfully short space of time, thanks also to the yards of hose and unlimited water at their disposal, the ship's toilet is speedily completed and the vessel herself restored to her former spotless condition. Then the cabins and skylights and ventilators are all thrown open, and fresh air and sweetness and light are let in once more.
Such is the scene at the coaling of a war-ship in the daytime. At night electric lamps fore and aft cast a brilliant light over all the scene as the work progressed being one that might well have inspired Dante, could he have seen it, to write another canto to his "Inferno." The black night, the louds of steam and coal dust, the clattering din of the winches, the crowd of dusky figures swarming everywhere as they work at top speed--the scene would make the fortune of an artist to depict.
Temperley Transporter
The operation of coaling, thanks to modern ingenuity, can nowadays be carried on as easily at sea as in harbour, by means of the Temperley transporter, and ingenious mechanical contrivance that is now fitted on board all our modern battle-ships and large cruisers. The Temperley transporter consists of a light beam attached to a derrick, along which a carriage travels, with a pulley attached, for the rope carrying the sacks of coal to pass over. By one continuous pull on board the battle ship the coal sacks are lifted clear up from the hold of the collier, conveyed directly up the side, and run on board oil to the deck of the ship taking in coal, where the men receive it and bestow it as already related. 
It is to a great extent by means of the Temperley transporter that our ships are able to coal as expeditiously as is done in the Channel and Mediterranean Fleets, where an average of over 120 tons an hour has been passed in the case of several of the larger battle-ships. The differences recorded among ships in commission in their rates of taking in coal are, in fact, the result of differences in the position of the bunkers, making it easy for some ships to coal quickly, while others cannot possibly do so.

The text of this article originally appeared in the November 26, 1897, issue of Navy and Army Illustrated (with a "hat tip" to Steven Gray's Blog for the reference).




 
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