By 1840, Messrs. Green of Blackwall owned a fleet of splendid East Indiamen fitted with auxiliary steam. One of them, the Earl of Hardwicke, which may be taken as typical of the others, had a steam-engine of 30 horse-power, working paddle-wheels intended to propel her in light airs and calms, such as are common in the region of the tropics. These paddles could be disengaged in one minute from the engine whenever it was desired to use sails alone. Although the Earl of Hardwicke was of 1600 tons, the space occupied by her boilers and engine was only 24 feet in length and 10 feet in width of the main deck, no part going into the hold or above deck. This engine in calm weather could give the ship a speed of five knots an hour on a coal consumption of three tons in twenty-four hours. In August 1840, in steaming from London to Spithead on her way to Calcutta, she beat the Wellington by twelve hours, the steam-engine working for upwards of forty hours. The ship was expected to make the voyage in 75 days, which, considering that she would have to go round the Cape, was quick work. She was a sister ship to the famous Vernon, with which the experiment of auxiliary steam for a regular East Indiaman was first made. The Vernon went from Calcutta to Spithead in 86 days, and for the first eight days and nights, in going down the Bay of Bengal, the wind was so light that she had to use her engines all the time. On the run from the Cape to Spithead she made the then shortest passage on record of 32 days, during which she used her steam nine days. The engines of the Vernon were constructed by Messrs. Seaward and Capel, of the Canal Ironworks, Limehouse, who were also builders of many other marine engines, some of large size, including that of the Nicholai, the largest steamer then belonging to Russia.
The “Earl of Hardwicke.”
When the Vernon left Blackwall on her trial trip her engines gave her a speed of about three and a half miles an hour, against a strong wind. Both these vessels, like all the rest of the Indiamen, were full-rigged ships. They were built to be sailing ships with steam auxiliary, and therefore were necessarily very differently constructed from the vessels which were launched about the same time for the North Atlantic trade, such as the Great Western, the President, and the British Queen, all of which were steamers with sail auxiliary. The interdependence of the two means of propulsion must not be lost sight of in considering the naval architecture of the period. The Indiamen of Messrs. Green illustrated the adaptation of steam as an aid to sailing vessels, which even then had not attained their full magnificence and power, but which showed continual improvement in speed as fresh ones were built. This improvement was partly forced upon sailing-ship builders by the opinion, universally held at that time, that steam could never supersede sail for long voyages, owing to the difficulty of carrying enough coal. The steamers designed for the North Atlantic trade, on the other hand, were only intended for a short voyage—short, that is, in comparison with those made by the Indiamen. Consequently, the North Atlantic liners have developed as steamers first and foremost with sail auxiliary, and the latest flyers on this ocean would be of little use as flyers if trading to the Far East or Australia, because they could not carry enough coal and would have to stop frequently to replenish their bunkers, while the liners of the southern and eastern oceans would be equally unable to compete on the North Atlantic routes.
Some sailing ships with steam auxiliary were, however, seen on the Atlantic. One of the most remarkable boats of the time was the Massachusetts. She arrived at Liverpool after a run of thirty days from New York, which she left on November 17, 1845. She had an Ericsson screw-propeller, which could be lifted when it was desired to run her under sail only. Her screw was merely an auxiliary and was only intended to be of use in calms or against light head winds. She was confessedly an experiment. Her engine-space meant one-tenth less cargo-space, but it was the owner’s idea that, if the voyage were accomplished with so much greater rapidity than the ordinary packet ships could achieve as to recompense them for the loss of tonnage, the experiment would be a success. Her owner was Mr. R. B. Forbes of Boston, and she cost altogether about £16,000. She sailed from Liverpool for New York, beating such well-known sailing ships as the Shenandoah and Adirondack by thirteen days, and the Henry Clay by five days.
The “Massachusetts.”
The United States Nautical Magazine in 1845 said: “Let it be distinctly understood that we do not call her a steamer or expect her to make steamboat speed except under canvas; her steam-power is strictly auxiliary to her canvas.” The Massachusetts was the first ship of a line intended to run between New York and Liverpool under the American flag. Her length on deck was 161 feet, and her beam 31 feet 9 inches, with 20 feet depth of hold, and she was about 751 tonnage. Her full poop extended as far forward as the main-mast, and contained accommodation for thirty-five passengers. Her bow was very sharp. She carried what is known as a false bow, which increased her sharpness, and was filled in on somewhat original lines. In her equipment everything that could be devised was provided. She carried lensed lights on each bow, and also aft between the main and mizzen masts. Her ventilators were similar to those on the Cunard steamers. Each stool, chair, and settee had airtight compartments, so that it could be used as a lifebuoy; she was well supplied with boats in case of accidents. The fact that she had an engine did not interfere with her sail equipment, for she was square-rigged throughout and carried skysails on all three masts. Her sail area was 3833 yards. A peculiarity of her rig was that all the masts were fidded abaft the lower masthead; but the advantages of this innovation were not found, in this or any other ship in which they were tried, to be very great, and it was not commonly adopted. It was thought that by fidding the masts in this fashion a vessel might be kept more steadily on her course when it became necessary for the sailors to reef or take in sail. She carried a condensing engine with two cylinders, working nearly at right angles, of 26 inches diameter with a stroke of three feet. She had two “waggon” boilers, each 14 feet long, 7 feet wide, and 9 feet high, with a furnace to each, and a blowing engine and blower for raising steam quickly. The diameter of the propeller was nine and a half feet. It was made of wrought copper and composition metal, and could be raised out of the water when the steam-power was not required. This was effected by means of a shaft from the engine-room through the stern, above and parallel to the propeller shaft. The upper shaft revolving raised the propeller and placed it close against the flat of the stern, where it was secured with chains. The propeller shaft passed close to the stern-post on the larboard side, and rested in a socket bolted to the stern-post, and was further supported by a massive brace above. Messrs. Hogg and Co. of New York constructed the engines to Captain Ericsson’s design. The rudder had the peculiarity of a “shark’s mouth” cut across it. This is an opening or gap extending a considerable distance across the rudder so that the rudder itself shall not be impeded by the screw-shaft which extends beyond it, the upper and lower portions of the rudder passing above and below the shaft when turned in that direction. Several steam auxiliary vessels were thus fitted, but it was not long ere the plan was adopted of cutting away the dead wood in front of the rudder-post and placing the screw before the rudder instead of behind.
This enterprise was short-lived, as the vessel made but two round voyages and thereafter remained in American waters. A sister boat, the Edith, was purchased by the United States Government before she had made a voyage. The Massachusetts was chartered to carry American troops to Mexico in 1846, and continued in the United States Navy until 1870, when she was sold and converted into the sailing ship Alaska, under which name she made some good passages.