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Hartford.-Work on machinery, &c., well advanced toward completion. Richmond.-In good condition.

Alaska.-In fair condition.

Benicia.-Machinery repairs to be completed; new boilers to be constructed and put in, $75,000.

Omaha.-Machinery overhauled and repaired; new boilers (on hand) to be put in, $50,000.

Plymouth.-Machinery, &c., overhauled, $5,000.
Lackawanna.-In fair condition.

Ticonderoga.-Machinery, &c., overhauled and repaired; new boilers to be constructed and put in, $65,000. Vandalia.-In good condition.

Monongahela.-Machinery, &c., overhauled and repaired; new boilers to be erected and put in, $85,000. Shenandoah.-In good condition.

THIRD RATES.

Juniata.-Machinery, &c., overhauled and repaired; new boilers (on hand) put in, $40,000.

Ossipee.-Machinery, &c., requires extensive repairs; new boilers to be constructed and put in, $110,000 Quinnebaug.-In good condition. Swatara.-In good condition.

Galena.-In good condition.

Marion.-In fair condition.

Mohican.-New compound machinery; boilers, &c., completed and erected, $50,000.

Iroquois.-Machinery, &c., repairs to be completed; new boilers to be completed and put in, $25,000.

Wachusett.-In good condition.

Wyoming.-Machinery, &c., generally overhauled and repaired; new boilers to be constructed and put in, $65,000.

Tuscarora.-Machinery, &c., to be overhauled and repaired; new boilers completed and put in, $65,000.

Kearsarge.-In good condition.

Adams. In good condition.

Alliance.-In good condition.

Essex.-New boilers constructed and put in, $40,000.
Enterprise.-Machinery to be repaired; new boilers completed and

put in, $40,000.

Nipsic.-In good condition.

Ashuelot.-In good condition.

Monocacy.-In good condition.

Alert.-Boilers should be replaced by new ones of improved design,

$40,000.

Kansas.-Machinery, &c.; boilers fair; no estimate.

Yantic.-In good condition.

FOURTH RATES.

Tallapoosa.-In good condition.
Palos.-In good condition.
Despatch. In good condition.

TORPEDO RAMS.

Intrepid.-In good condition.
Alarm.-In good condition.

Summary of the cruising efficiency of the unarmored vessels now in the service. [NOTATION FOR COMPUTATION.-S=maximum speed; S= maximum speed; C=coal per day at maximum speed; C'coal per day at maximum speed; 3 log. S'+ log. C-3 log. S= log. C', or C x 23=C'.]

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Number of unarmored cruisers at present in commission on squadron service; individual estimates of the number of such vessels required for present necessary duties; number of vessels decided upon by joint action of the Advisory Board as necessary.

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Tabulated statement of the unarmored sea-going vessels built by the six most prominent naval powers of Europe since 1867, and coming properly under the title of new cruisers.

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Tabulated statement of British vessels in commission on squadron service January 1, 1881.

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REPORT OF THE

NAVAL

CONSTRUCTORS TO THE BOARD WITH RE

GARD TO WEIGHT AND DISPOSITION OF THE ARMAMENT OF THE TEN-KNOT GUNBOAT.

GENTLEMEN: In answer to the following resolutions

1st. That the constructors be requested to consider the armament of 40 tons, recommended by the ordnance committee, and to report as soon as possible whether it can be safely carried, giving, as far as possible, the reasons for their conclusions. 2d. That the constructors consider the practicability of giving half-turrets to the wooden gunboat, and give their conclusions to the board

we have to submit the following report:

1st. We are of the opinion that there is not sufficient space or displace

Approximate cost.

Weight of machinery.

Extreme breadth.

Weight of coal.

Mean draught.

Displacement.

Register tonnage.

ment in the design of the gunboat to admit of increasing the armament from 18 tons to 40 tons.

2d. We are of opinion that it is impracticable to put half-turrets on the wooden gunboat.

Very respectfully,

THEODORE D. WILSON,
PHILIP HICHBORN,

Naval Constructors.

REPORT OF THE COMMITTEE APPOINTED TO EXAMINE THE DESIGN OF THE TEN-KNOT GUNBOAT.

GENTLEMEN: The committee, after having carefully examined the designs of the ten-knot gunboat, with a view to reconciling the differences of opinion with regard to the modifications considered necessary, find that by reducing the weight of coal carried in these vessels 34 tons, there may be given to them a barkentine rig with not less than 5,600 square feet of sail, and a long topgallant forecastle extending to or beyond the foremast.

It is not considered judicious to apply the half-turrets to these vessels, and good fore-and-aft fire can be obtained from heavy Hotchkiss guns, mounted on the rail. It is not considered advisable to give these ves sels poop-cabins and poop-wardrooms. They may carry 32 tons of armament.

NAVAL CONSTRUCTOR LENTHALL.
CHIEF ENGINEER ISHERWOOD.
CAPTAIN JOHNSON.
COMMANDER HOWISON.

COMMANDER CROWNINSHIELD.

REPORT OF THE COMMITTEE ON THE THIRTEEN-KNOT UNARMORED

CRUISER.

GENTLEMEN: After examining carefully the designs of the thirteenknot cruiser, with a view to reconciling differences of opinion with regard to the modifications necessary, we find as follows:

Weight of hull and equipments, including topgallant forecastle

Weight of machinery....

Weight of coal......

Total

Estimated displacement...

Available weight ....

Tons

1,759

550

575

2,884

3,043

159

This available weight may be given to the armament, whilst the vessel can have 17,600 square feet of sails, 217 men, and her other weights, as shown. If a poop-cabin be applied to her it seems to be a question with some of the committee whether the additional weight, carried so far aft, would not affect here qualities as a sailer or steamer. This matter is left to the decision of the full Board.

Respectfully,

JOHN LENTHALL.
B. F. ISHERWOOD.
P. C. JOHNSON.

H. L. HOWISON.

A. S. CROWNINSHIELD.

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