USS Princeton

The first USS Princeton was a sail and steam warship with screw propulsion.

General

John Ericsson and Captain Robert F. Stockton (US Navy) played the lead roles in the design and supervision of construction. Views vary on the sharing of credit and blame.

Launched on September 5, 1843.

Princeton was said to be the first screw-driven ship to have its engine mounted entirely below the waterline for protection from gunfire. Her two vibrating lever engines, designed by Ericsson, were built by Merrick & Towne.

See Wikipedia entry.

Guns

Twelve 42-pound carronades were mounted within the ship's iron hull.

It was also originally intended to mount one long, larger gun. A smooth bore muzzle loader was ordered, made of wrought iron, rather than cast iron or bronze, and was designed to fire a 225-pound 12-inch shot 5 miles. It was of "built-up construction", strengthened by shrinking-on wrought iron hoops around the breech-end.

Stockton wanted his ship to carry two long guns, so an additonal gun was ordered, the "Peacemaker", another 12-inch muzzle loader, which was made in New York. Although it was of heavier construction, it did not have the benefit of the shrunk-on hoop construction used on the original gun. The shrunk-on hoops pre-compressive the inner barrel, thereby reducing the maximum tensile stress experienced on firing.

On 28 February 1844 President Tyler and numerous guests joined Princeton for a cruise. Captain Stockton decided to fire the larger of her two long guns, Peacemaker, to impress his guests. When he fired the third or fourth shot, the gun burst. Several people were killed instantly, and another 16 to 20 visitors and crew were injured.

Many popular accounts place Ericsson in the role of hero, and Stockton as the villain in the matter of the guns, stating or implying that Ericsson designed the first gun and Stockton the failed 'Peacemaker'. However, Pearson in 1966 reviewed the incident, and found that Ericsson had been involved. Ericsson and Ogden had watched the boring of the 'Peacemaker' and examined the shavings. The owners of the Phoenix Foundry (Hogg and DeLamater) signed an affidavit stating that Ericsson had 'furnished and executed' drawings of the American twelve-inch wrought iron gun, and that boring and finishing were 'under the personal superintendence and instructions of Captain John Ericsson'. Others testified that Ericsson had examined the gun after proof shots were fired.

A court of inquiry followed the explosion, and found that 'every precaution skill could devise had been taken'. Pearson noted that President Tyler then insured Stockton's future by ordering that another gun of the same size as the failed one be ordered and made under the direction of Captain Stockton.

Pearson's Paper includes interesting information revealed by an investigation by the Frankin Institute into technical aspects of the failure, instigated by Stockton. In short, the method of building up the heavy gun barrel by fire-welding was inappropriate. The prolonged period when the material required to be held at welding heat led to excessive grain growth and to the accumulation of impurities at grain boundaries. The problem could have been mitigated by working the material under the hammer, but the company readily admitted that their hammer was too small to work such a mass.

Four large guns were made for Princeton:
The first was forged by the Mersey Steel and Iron Co.
The second was made to a different design by Messrs Ward's Hammersley Forge in New York. This is the one that exploded during demonstration firing.
The third was a replacement for the above, made by Fawcett, Preston and Co with forgings by the Mersey Steel and Iron Co. This was never in service, and is preserved at Washington Navy Yard.
A fourth gun was made of cast iron in the United States, but blew up after firing a few trial rounds.

Press Reports

1843 'The Largest Wrought Iron Gun in the World. — For the last two weeks L. B. Ward and Co. have been hammering out, at the Hammersley forge, at the foot of Fifty-ninth-street, North River, the largest gun, as it is said, that we have any record of. It is 14 feet long, three feet in diameter at the breach, and weighs 30,000 lbs. or 15 tons. It is made for government, and will be placed on board the Princeton steamer, Capt. Stockton, now at Philadelphia. This extraordinary gun is hammered out with a hammer weighing 15,000 lbs. The process of heating and hammering such an immense shaft is wonderful. The machinery for placing the gun in the furnace, of putting it on the anvil, of turning, cutting, and hammering, are so complete, that it is moved with a precision and facility truly astonishing. Cast-iron guns of this size, and larger, are frequently made, but no attempt, we believe, has ever before been made to make a gun of this size from wrought iron. It is calculated that the strength and power of this piece, when finished, will carry ball of one-third greater weight, and one-fourth increased distance, than the best cast-iron guns.— New York paper.'

1845 'LARGE CANNON.- An immense cannon, intended for the American navy, is just being finished at the foundry of Messrs. Fawcett and Co., in this town. It is of malleable iron, of a superior quality, manufactured for the the purpose at the Mersey Iron works. The weight of metal previously to being bored was upwards of eleven tons, and the gun will be about eight tons when finished. The length is l3 feet, and bore 12 inches; outside diameter of the widest part 27 1/2 inches, the iron varying in thickness from 3 1/2 inches at the mouth to 7 3/4 inches at the opposite extremity. The exterior is beautifully finished, bearing a polish similar to engine work, which has cost considerable time and labour. This ponderous piece of ordnance will, on its completion, be placed on board the American frigate Princeton, which is expected here shortly to receive it, and mounted on the same carriage which supported the huge cannon that burst some time back, when several persons lost their lives. It is the largest ever made in this country, and will rank as one amongst many in other efforts of mechanical skill and ingenuity in iron work, which have emanated from Messrs. Fawcett and Co.'s establishmment. Before its delivery, the gun will be tested with a double charge of gunpowder, (45lbs.) and two balls, made for the purpose.'

Propulsion Plant

The original Ericsson propeller was relaced by a Stevens (of Hoboken) propeller in March 1845

The boiler furnaces had forced draught and burned anthracite, in order to minimise smoke and hence reduce the chance of early detection.

A report of Princeton's performance by B. F. Isherwood, Chief Engineer of the US Navy, was highly critical of the boilers. 'Both sets of boilers were utterly inadequate to supply the engines with the steam of proper pressure they could work off .... The most violent forcing with the fan blast could not effect a reasonable approach to this. ... Much smaller engines could have worked off all the steam the boilers could supply...'

See Also

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