USS Maine (ACR-1)
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Career (United States)

Ordered: 3 August 1886
Laid down: 17 October 1888
Launched: 18 November 1889
Commissioned: 17 September 1895
Fate: Sunk by explosion 15 February 1898

General characteristics

Displacement: 6,682 tons
Length: 319 ft. (97 m)
Beam: 57 ft. (17.4 m)
Draft: 22 ft. (6.7 m)
Speed: 17 knots (31 km/h)
Complement: 374 officers and men
Armament: 4 - 10 inch (250 mm) guns, 6 - 6 inch (150 mm) guns, 7 - 6 pounders (57 mm), 8 - 1 pounders (37 mm), 4 - 14 inch (350 mm) surface torpedo tubes.

USS Maine (ACR-1), a 19th century ship of the United States Navy, exploded and sank on 15 February 1898 in an event that 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.

Construction

The Maine, the first U.S. Navy ship 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 Texas 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.

Sinking

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, on 15 February at 9:40 p.m., an explosion on board the Maine occurred in the Havana Harbor. Later investigations revealed that more than 5 long tons (5.1 t) of powder charges for the vessel's 6 and 10 inch (150 and 250 mm) guns had detonated, 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. Altogether, there were only 89 survivors, 18 of whom were officers. 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.

Causes of the sinking

Because of the uproar the sinking of the Maine caused in the United States, President McKinley demanded an immediate investigation into the cause of the explosions. A U.S. Naval Court of Inquiry arrived in Havana and began its investigation. 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. All parties involved concluded without a doubt that the explosion of the forward six inch (152 mm) ammunition magazines had caused the sinking. Why those magazines had exploded, no one could determine conclusively, and doubt remains as to the exact cause to this day. There have been four major investigations into the sinking since 1898. From the four inquiries, two hypotheses have emerged: one, that a mine in Havana Harbor had exploded underneath the battleship, causing the explosion of the magazines; and two, that spontaneous combustion of the coal in bunker A16 created a fire that detonated the nearby magazines.

External mine hypothesis

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.

If there was 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.

Coal bunker fire hypothesis

Since the time of the explosion in 1898, many have advocated the theory that an internal explosion had sunk the Maine, basing their conclusion on the coal bunker fire theory. Supporters of this theory believe that spontaneous combustion of the coal in bunker A16 created a fire that detonated the nearby magazines, which shared a common uninsulated steel wall with bunker A16.

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 59 °F (15 °C), 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 the U.S.S. 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 U.S.S. 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.

1898 Court of Inquiry

The day after the Maine was sunk in Havana harbor, Assistant Secretary to the Navy Theodore Roosevelt stated that ''we shall never find out definitely'' the cause of the disaster. 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: ''At frame 18 the vertical keel is broken in two and the flat keel is bent at an angle similar to the angle formed by the outside bottom plating. [...] In the opinion of the court, this effect could have been produced only by the explosion of a mine situated under the bottom of the ship at about frame 18, and somewhat on the port side of the ship.'' (part of the court's 5th finding) ''In the opinion of the court, the MAINE was destroyed by the explosion of a submarine mine, which caused the partial explosion of two or more of her forward magazines.'' (the court's 7th finding) and ''The court has been unable to obtain evidence fixing the responsibility for the destruction of the Maine upon any person or persons.'' (the court's 8th finding).

1911 Court of Inquiry

By 1908, the war drums had long stopped beating, and many parties demanded that the Maine be raised from Havana harbor. Cuban officials became worried about the safety of having a sunken ship in their harbor, U.S. officials wanted the remains of the sailors trapped in the wreck recovered and buried, and a few people wanted to confirm the cause of the sinking. Begun in December 1910, a huge waterproof cofferdam was built around the wreck and water was pumped out, finally exposing the wreck by late summer 1911. Sections of the hull of the Maine were numbered, many photographs were taken, and models of the Maine and her wreckage were built by the single Navy employee assigned to the job in Havana. Except for many souvenir items retained by the Navy and frequently distributed to the public, most of the tangled wreckage was dumped into the sea off the coast of Cuba.

Between 20 November and 2 December 1911 a court of inquiry headed by Rear Admiral Charles E. Vreeland visited the wreck. The conclusions of the Vreeland Board differed with the Sampson Board only in detail. The Vreeland Board agreed that the explosion of the magazines was triggered by an external blast, but the damage to the Maine was much more extensive than the Sampson Board had thought. It was also concluded that the initiating blast occurred further aft on the ship, and a lower powered explosive breached the hull than was originally thought. After the investigation, the newly located dead were buried in Arlington National Cemetery and the hollow, intact portion of the hull of the Maine was refloated and ceremoniously scuttled at sea on 16 March 1912. Ever since they were published, doubts about the validity of the Navy's 1898 and 1911 findings have been expressed by historians and scientists.

1976 Rickover investigation

The argument was not touched for another half a century, until a private investigation in 1976 was triggered by Admiral Hyman G. Rickover after he read a newspaper article on the sinking. He and several scientists from the U.S. Navy launched an investigation based on the evidence collected during the two Courts of Inquiry. Rickover believed that the new knowledge collected since World War II on analyzing ships damaged by internal and external explosions would shed new light on the sinking of the Maine. The Rickover analysis came to a completely different conclusion than the Courts of Inquiry. Rickover found that the cause of the explosion did not originate outside the ship. The cause of the explosion originated within the ship, but what actually happened could not be precisely determined. Rickover believed that the most likely cause was a fire within a coal bunker, which had heated the magazines to the point of explosion. His 170 page book, How the Battleship Maine Was Destroyed, was first published in 1976. The world accepted this new conclusion, and for more than a quarter of a century, the coal bunker fire theory reigned over the external mine theory.

1999 National Geographic investigation

In 1999, to commemorate the centennial of the sinking of the Maine, National Geographic Magazine commissioned an analysis by Advanced Marine Enterprises, using computer modeling that was not available for previous investigations. The AME analysis examined both theories and concluded that ''it appears more probable than was previously concluded that a mine caused the inward bent bottom structure and the detonation of the magazines.'' Some experts, including Admiral Rickover's team and several analysts at AME, do not agree with the conclusion, and the fury over new findings even spurred a heated 90 minute debate at the 124th annual meeting of the U.S. Naval Institute.

Memorials

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. 165 were buried at Arlington, although remains of one sailor were exhumed for his home town; of the rest only 62 were known. Some bodies were never recovered and the crewmen buried in Key West Cemetery remain there under a statue of a U.S. sailor holding an oar, 27 are buried in the U.S. Navy Plot. There is also a memorial, consisting of the shield and scrollwork from the bow of the ship, in Bangor, Maine. The base of the Maine's conning tower is currently on display at Westbrook Veterans' Memorial Park in Canton, Ohio, hometown of President McKinley. 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. A shell from the main battery is located just inside of the Pine St. entrance of city hall in Lewiston, Maine. There is a monument for the Maine with a portion of a bronze engine room ventilator shaft in Pompton Lakes, New Jersey. The explosion bent fore mast of the Maine is located at the United States Naval Academy at Annapolis, Maryland, causing a traditional in joke among midshipmen that the Maine, with its main mast in Arlington National Cemetery (Northern Virginia) and its fore mast in Annapolis, 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. During the salvage remains of 66 more were found of whom only 1, an engineering officer, was identified and returned to his home town; the rest were reburied at Arlington Cemetery making a total of 229 buried there.

In 1913, a U.S.S. 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, Pennsylvania, 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.

In 1926 the Cuban government also erected a memorial to the victims of the Maine on the Malecon in Havana, near the Hotel Nacional in commemoration of the assistance of the United States in acquiring Cuba's independence from Spain. The memorial was damaged by crowds following the Bay of Pigs Invasion in 1961 and the eagle on top was broken and removed. The Communist government then added its own inscription blaming ''imperialist voracity in its eagerness to seize the island of Cuba'' for the Maine disaster.