USS Maine (ACR-1), the first ship of the United States Navy to be named for the state of Maine, was a 6,682-ton second-class pre-dreadnought battleship originally designated as Armored Cruiser #1. Maine and were unusual in that their armament was mounted en echelon, projected off to either side (Maine's forward turret was off to starboard and her aft turret to port; the arrangement was reversed on Texas). This severely limited their ability to fire on a broadside. Maine was the stronger of the two ships, but inferior in every way to the later Indiana-class coastal battleships and subsequent ships.
Congress authorized her construction on 3 August 1886, and her keel was laid down on 17 October 1888, at the Brooklyn Navy Yard. She was launched on 18 November 1889, sponsored by Miss Alice Tracey Wilmerding (granddaughter of Navy Secretary Benjamin F. Tracy), and commissioned on 17 September 1895, under the command of Captain Arent S. Crowninshield.
The sinking of the Maine on 15 February 1898 precipitated the Spanish-American War and also popularized the phrase Remember the Maine, to Hell with Spain! In subsequent years, the cause of the sinking of the Maine became the subject of much speculation. The cause of the explosion that sank the ship remains an unsolved mystery.
The Maine spent her active career operating along the East Coast of the United States and the Caribbean. In January 1898, the Maine was sent from Key West, Florida, to Havana, Cuba, to protect U.S. interests during a time of local insurrection and civil disturbances. Three weeks later, at 9:40 on the night of 15 February, an explosion on board the Maine occurred in the Havana Harbor. Later investigations revealed that more than five tons of powder charges for the vessel's six and ten-inch (254 mm) guns had ignited, virtually obliterating the forward third of the ship. The remaining wreckage rapidly settled to the bottom of the harbor. Most of the Maine’s crew were sleeping or resting in the enlisted quarters in the forward part of the ship when the explosion occurred. Two hundred and sixty-six men lost their lives as a result of the explosion or shortly thereafter, and eight more died later from injuries. Captain Charles Sigsbee and most of the officers survived because their quarters were in the aft portion of the ship. On 28 March, the US Naval Court of Inquiry in Key West declared that a naval mine caused the explosion.
The explosion was a precipitating cause of the Spanish-American War that began in April 1898 and which used the rallying cry, "Remember the Maine!, To hell with Spain! The episode focused national attention on the crisis in Cuba but was not cited by the William McKinley administration as a casus belli, though it was cited by some who were already inclined to go to war with Spain over their perceived atrocities and loss of control in Cuba.
In February 1898, the recovered bodies of sailors who died on the Maine were interred in the Colon Cemetery, Havana. Some injured sailors were sent to hospitals in Havana and Key West. Those who died in hospitals were buried in Key West. In December 1899 the bodies in Havana were disinterred and brought back to the United States for burial at Arlington National Cemetery where there is a memorial to those who died and which includes the ship's main mast. Some bodies were never recovered and the crewmen buried in Key West remain there under a statue of a U.S. sailor holding an oar. There is also a memorial, consisting of the shield and scrollwork from the bow of the ship, in Bangor, Maine. Shells from the main battery were placed along with small plaques as memorials at the Soldier's Home in Marion, Indiana (now a VA Hospital and national cemetery), at the St. Joseph County Courthouse lawn in South Bend, Indiana, and at the Old soldiers' home in Minneapolis, Minnesota. The base of the Maine's conning tower is currently on display at Westbrook Veterans' Memorial Park in Canton, Ohio, hometown of President McKinley. A shell from the main battery is located just inside of the Pine St. entrance of city hall in Lewiston, Maine. The explosion-bent fore mast of the Maine is located at the United States Naval Academy at Annapolis, Maryland. There is a monument for the Maine and a portion of a bronze engine room ventilator shaft from the Maine in Pompton Lakes, New Jersey.
There is a traditional in-joke among midshipmen at the Academy that the Maine, with its main mast in Northern Virginia and its fore mast in Central Maryland, is the longest ship in the Navy.
On 5 August 1910, Congress authorized the raising of the Maine to remove it as a navigation hazard in Havana Harbor. On 2 February 1912, she was refloated under supervision of the Army Corps of Engineers and towed out to sea where she was sunk in deep water in the Gulf of Mexico on 16 March 1912, with appropriate military honors and ceremonies.
In 1913, a USS Maine Monument was completed and dedicated in New York City. Located at the SW corner of Central Park at the Merchant's Gate entrance to the park. On the park side of the monument is fixed a memorial plaque that was cast in metal salvaged from the ship. In 1914, one of the Maine’s six anchors was taken from the Washington Navy Yard to City Park in Reading, Pa., and dedicated during a ceremony presided over by Franklin D. Roosevelt, who was then assistant Secretary of the Navy. The ceremony commemorated those who died in the explosion.
No one then, or today, disputes the fact that the overall destruction of the ship was due to the explosion of some of her magazines. What caused the magazines to explode, however, has been debated since the day the ship sank. Some evidence suggests that the initiating cause of the magazine explosion was an external explosion. The hypothesis that a mine, allegedly planted by the Spanish as a way to deter the efforts of the United States to take Cuba, is the assumption that some Americans came to immediately after the sinking. This also provided the stimulus for war that many Americans had been seeking, though the McKinley administration rejected that line of thinking.
If there were a mine, was it detonated accidentally, by insurgents, by an insubordinate Spaniard, or by Spanish authorities acting under orders? The last possibility is least likely because no testimony or documentation or specific accusation has ever been found. The mine could have been placed to defend the harbor and unintentionally drifted to where the Maine was moored. Alternatively, the mine could have been used by Cuban rebels in the hopes that the attack on the Maine would be blamed on the Spanish and so trigger a war between the United States and Spain.
Some, but not all, of the witnesses stated that they heard two distinct explosions several seconds apart. They believed if anything else besides a mine had triggered the magazine explosion, then witnesses would have only heard one blast, because the only explosion would have been of the magazines, unless all of the munitions contained in the magazine did not explode in the primary explosion and instead exploded sequentially in the resulting fire (which did occur). They thought the only reason that two explosions would have been heard was if something besides the magazine had exploded, such as a mine. However, due to the difference in the speed of sound through water and through air, some witnesses may have sensed a single explosion twice - first shock through the water, followed by the airborne sound of the blast.
Another piece of evidence of an external mine were the observations of divers who examined the bottom plates of the Maine. Three bottom plates were bent inward. If an internal explosion had occurred, the bottom plates, they thought, would have been bent outward, away from the explosion, and an external blast would have blown the plates inward, consistent with the evidence. Also, a large hole was noticed on the floor of Havana harbor, and was presumed from the theorized external explosion. Although, it could be argued that an explosion of the magnitude caused by the Maine's magazines could also have put a hole in the harbor floor.
Nevertheless, problems with the external mine theory remained. One was the absence of dead fish in Havana harbor the next day. Assuming that fish lived in the polluted waters of the harbor, many of them should have been killed if a mine exploded in their habitat, but no one reported seeing any floating in the harbor. Second, no one reported seeing a jet of water thrown up during the event. A common sight during the underwater explosion of a mine is a column of water emerging on the surface above them. Third, some contemporaneous experts believed that the few bottom plates found to be bent inward could be just as plausibly explained by the physical forces acting on the sinking ship, and thus did not necessarily indicate an explosion external to the ship.
Spontaneous combustion of coal was a fairly frequent problem on ships built after the American Civil War. This type of fire occurs when the surface of freshly broken coal is exposed to air. The coal surface oxidizes, producing heat. When the coal reaches a temperature of about 750-800 °F (400-425 °C), the coal will begin to burn. The heat from the fire could have transferred to the magazines, which would have triggered the explosion. And in fact, during the Spanish-American War several ships sustained damage when the bituminous coal in their bunkers ignited. These fires were difficult to detect because they could smolder for hours at low heat, giving off no smoke or flame and without raising the temperature high enough to trigger the alarm systems on board.
Reports indicate that bunker A16 on the Maine had been inspected for the final time on 15 February at 8:00AM. This would have allowed ample time for a coal bunker fire to smolder and cause the type of disaster that befell the ship later. Still, when bunker A16 was inspected that morning, the reported temperature was only , and the Maine's temperature sensor system did not indicate any dangerous rise in temperature later. Furthermore, the discipline on the Maine was reported to be excellent, and regular inspections of coal bunkers for hazards, as well as the implementation of precautions for preventing bunker fires, were diligently carried out under the supervision of the ship's cautious executive officer Richard Wainwright. In addition, the likeliness of a spontaneous ignition of coal decreases over time, as the older the coal is the less likely it is to self-ignite. On USS Maine, the coal had been exposed to the air for a period of two months, which is more than double the amount of time recommended by the US Navy. Finally, the type of coal used onboard the USS Maine was known as Low-Volatile bituminous coal which was not known to self-ignite. These idiosyncrasies have given rise - then and now - to debate over the coal bunker fire argument’s legitimacy.
Immediately after the sinking in 1898, President William McKinley ordered a naval inquiry into what caused the Maine to explode. This 1898 Court of Inquiry headed by Captain William T. Sampson began its work on 21 February. Ramón Blanco y Erenas, Spanish governor of Cuba, had proposed instead a joint Spanish-American investigation of the sinking. Captain Sigsbee had written that "many Spanish officers, including representatives of General Blanco, now with us to express sympathy. In a cable, the Spanish Minister of Colonies, Segismundo Moret, had advised Blanco “to gather every fact you can to prove the Maine catastrophe cannot be attributed to us.”
Survivors and eyewitnesses testified for the court, and several navy divers explored the sunken ship, hoping to find clues as to what may have caused the disaster. Though several volunteered, no experts outside the Navy were called upon for advice. The Sampson Board concluded that the Maine had been blown up by a mine, which in turn caused the explosion of her forward magazines. The official report from the board, which was presented to the Navy Department in Washington on 25 March, specifically stated the following:
Ever since the ship sank, doubts about the validity of the Navy's 1898 and 1911 findings have been expressed by historians and scientists.