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Worst U.S. Maritime Disaster

March 19th, 2011 No comments

I would make a bet that if you took a poll, asking the average Joe what is the worst U.S. maritime disaster, you would get “The Sinking of the Titanic” as the number one answer. I would agree that the RMS Titanic is by far the most famous, but it was not really a U.S. disaster, and not the worst in terms of loss of life (in U.S. History). That grim distinction belongs to the explosion and subsequent sinking on April 27, 1865 of the SS Sultana, a Mississippi River steamboat paddlewheeler.

SS Sultana on April 26, 1865

SS Sultana on April 26, 1865

The Sultana was a new, state-of-the-art steamboat, built in 1863. She had been making regular runs up and down the Mississippi from St. Louis to New Orleans during the last two years of the Civil War. On her last trip, she was commissioned by the Federal Government to carry Union solders upriver, on their way home as the war came to a close. In fact, most of the passengers were newly released prisoners of war, from the Cahaba and Andersonville prisons.
The high death toll was due to the fact that the ship was dangerously overloaded. She was by law limited to 376 passengers and crew. However, there were thousands of former Union prisoners at Vicksburg, Mississippi, anxious to take the first available ship and get home. The government was paying a lucrative $5 per soldier to get them home, so the ship’s captain, J. C. Mason of St. Louis, was incented to put as many passengers on board as possible. According to some, the military officers were being paid a kickback of $1.15 per person to look the other way and ignore the overcrowding. [2] At any rate, the Sultana was carrying 2,200 to 2,400 people at the time of the disaster, six times the legal limit. So many people were crammed on board they decided not to make out a passenger list. As you can see from the photo taken the day before she sank, the Sultana was packed with people literally shoulder-to-shoulder. Extra stanchions were installed to support the hurricane (top) deck, which was sagging from the weight of the passengers.
At Vicksburg, the engineers discovered leaks and a bulge in one of the boilers. Not wanting to lose time and take a chance on another steamboat getting the opportunity to carry the passengers, the captain decided to patch the boiler rather than replace it, which would have taken three days.

Sultana Burning, Harper's Weekly

Sultana Burning, Harper's Weekly

The Disaster: After stopping in Memphis, Tennessee, Sultana started upriver, headed for the next stop at Cairo, Illinois, where most of the passengers were scheduled to disembark. The spring runoff was underway, so the river was high and the current strong, which meant that the Sultana needed a higher than normal head of steam to make her way upstream. The steamboat, top-heavy from too many passengers, was careening from one side to the other. At 2:00 a.m. on the 27th, about seven miles upriver from Memphis, three of the four boilers exploded. The explosion tore a gaping hole in the Sultana and sent burning pieces of coal flying everywhere, which quickly caught the wooden ship on fire. Men were blown off the ship, or jumped into the icy spring water to escape the flames. Soldiers drowned, burned, died from hypothermia, or were crushed when the smokestacks collapsed onto the stricken ship. About 500 men were rescued from the water, of which some 200 to 300 died later from burns, hypothermia, or their general poor health resulting from their captivity. Altogether some 1,700 to 1,800 people died, making it the worst maritime disaster in American History.
The Cause: The explosion was likely caused by four factors: the steam pressure was probably abnormally high due to the need for extra power to overcome the strong current. The hasty boiler repairs were inadequate to insure safety. The careening could also have played a part – the four interconnected boilers were arranged side-by-side, which meant that water could flow from the highest boiler to the lowest as the ship tilted to one side then the other. If the water level was not properly maintained, hot spots could develop, where the iron boilers become red-hot due to lack of water, then when the water rushes back it would instantly turn to steam, causing a sudden surge in the overall steam pressure.

Coal Torpedo

Coal Torpedo

Sabotage? Another possible cause for the boiler explosion was reported in the St. Louis Globe-Democrat in an article on May 6, 1888. [4] In this article, William C. Streetor, a resident of St. Louis, reported that while he worked as a clerk and assistant keeper in the Gratiot and Myrtle street prisons, an ex-Confederate Secret Service agent and boat-burner, Robert Louden (or Lowden), claimed he had smuggled a coal torpedo aboard the Sultana at Memphis. The coal torpedo was a small explosive device made to look like an ordinary lump of coal, but would explode in a coal furnace, causing a secondary explosion of the boiler. (During the Civil War, a broad variety of explosive devices were called “torpedoes”.) Some sixty Union steamboats were destroyed by Confederate agents during the war. [5] The sabotage theory was called “wholly baseless” in one source [2], and given credibility in others. [5]
Why is the Sultana Disaster unknown? When the Sultana’s boilers burst, the nation was inundated with news. Abraham Lincoln had been assassinated, and John Wilkes Booth had been caught and killed on April 26th, the day before the Sultana exploded. Also on the 26th, the last major Confederate Army, under Joseph E. Johnston, surrendered to William T. Sherman. Possibly because of the shady nature of the circumstances around the overcrowding, the Army was not anxious to publicize the story. The public was either tired or desensitized to news of death, having just gone through a war in which at least 618,000 soldiers were killed. Finally, anything which happened in the West received less coverage in Eastern papers.
Vox’s Take: Whether the sinking of the Sultana was accidental or deliberate, it was an especially tragic end for the Union prisoners of war who survived incredible deprivation in Southern prison camps, only to be killed when they were so close to getting home. In a small way, the incident helped bring former enemies together: the people of Memphis cared for the survivors and raised funds to help them. [3] One ex-Confederate soldier in a small boat is said to have single-handedly rescued fifteen Union survivors. [2] Perhaps someday this incredible story will find its way into the history books. Interestingly enough, the remains of the Sultana may have been found in 1982, 32 feet under a soybean field in Arkansas. [3] The Mississippi River has changed course many times, and the wreckage is now two miles from the current location of the main channel.

Sources:

[1] Remembering Sultana, National Geographic News
[2] Death on the Dark River, The Story of the Sultana Disaster in 1865, ancestry.com
[3] SS Sultana, Wikipedia
[4] Sabotage of the Sultana, Civil War St. Louis
[5] The Boat-Burners, Civil War St. Louis

Evolution of Naval Armor, Part 2: “Monitor and Merrimac”

January 16th, 2011 2 comments

(To see all the posts in this series, click here: Naval Armor.)
The birth of “modern” naval warfare is sometimes traced to the first engagement between two ships protected by iron armor – the “ironclads”. The Battle of Hampton Roads, more famously referred to as the Battle of the Monitor and the Merrimac, occurred on March 8-9, 1862 during the U.S. Civil War.

CSS Virginia

CSS Virginia

CSS Virginia (Merrimac)
The USS Merrimac was a wooden-hulled screw frigate launched by the U.S. Navy in 1855. She was in port, due for an engine overhaul at the outbreak of war on April 12, 1861. When the Gosport Navy Yard (later Norfolk Navy Yard) was in danger of being overrun on April 20 by Confederate land forces, the Navy set fire to and scuttled her before abandoning the yard. The Merrimac sank in shallow water without burning completely. The Confederates, desperate for ships, were able to salvage the hulk. Afraid that the North was planning a fleet of ironclads, they decided to rebuild her as an ironclad ram. She was fitted with a four-inch thick iron deck and a sloping casemate (fortified enclosure or roof) of two two-inch plates of railroad iron backed by 24 inches of pine and oak. They mounted ten guns (cannons) on her, four along each side and one swiveling gun each for the bow and stern. Finally, she was fitted with an eight-foot long, 1,500 pound iron ram at her bow. They renamed the rebuilt ship the CSS Virginia. The additional weight was almost too much for the Virginia, whose keel was of course not designed for it. The Virginia also had to make do with the original steam engines meant for the much lighter Merrimac, and so she was woefully underpowered and slow. The additional weight also caused her to draft deeper than before at up to 22 feet, limiting her use in rivers and coastal waters. She was top-heavy, and between the underpowered engines and deep draft she was ”little more manageable than a timber-raft” – she required 45 minutes to turn a complete circle. She wasn’t fit for the open ocean either, so her prospects seemed iffy. In fact, some Confederate newspapers had already pronounced her a failure before her first battle.
USS Monitor

USS Monitor

USS Monitor
The North did not actually have plans in motion to build an ironclad, but they heard about the new ironclad being built by the Confederates, and so embarked on a crash program to produce an ironclad of their own. The Navy employed Swedish engineer John Ericsson who came up with a radical new design. The USS Monitor featured just two large-caliber (11 inch) Dahlgren guns, but these were mounted in a swiveling turret so they could fire in any direction. Most of the ship lay under the water line beneath a flat deck of one inch armor supported by heavy timbers. Her sides had five inch-thick iron plates, backed by oak. The turret was comprised of eight layers of one inch iron plate, bolted together. A ninth plate inside acted as a sound shield. This new style of ship was like nothing anyone had seen before. One Confederate officer thought she looked like a “cheese-box on a raft”. The Monitor had a very modest seven to eight foot draft, making her very suitable for rivers and shallow coastal waters. Like the Virginia, the Monitor was not fit for the open ocean – with the armored turret she was top-heavy, and with the shallow draft she was vulnerable in rough seas.
Battle of Hampton Roads

Battle of Hampton Roads

Battle of Hampton Roads
On March 8, 1862, the Virginia was supposed to go out on sea trials, but the captain instead decided to contest the Federal blockade of the waters around Norfolk and Newport News, Virginia – a body of water called Hampton Roads. The wooden Federal fleet saw an approaching ship that looked like a “barn roof” and soon realized that they were up against the rumored Confederate ironclad. They joined in battle, but they were completely outclassed. The shells from the Union guns simply bounced off Virginia’s sloping iron casemate. Ignoring a small union gunboat, Virginia first attacked and sank the USS Cumberland by ramming her below the water line. The ram became stuck in Cumberland’s hull and nearly dragged the Virginia down with the Cumberland, but then the ram broke off and Virginia backed away. The Cumberland died fighting, firing her guns as long as they were above water.
Next, Virginia engaged the USS Congress. After an hour, the Congress was badly damaged and surrendered. At this point a Union shore battery fired on the Virginia and she retaliated by firing “hot shot” (cannon shot heated red-hot) at the Congress, which caught fire and burned the rest of the day. The Virginia then tried to engage the USS Minnesota, which had run aground in shallow water. But because of her deep draft, the Virginia was not able to get within range. The battle was suspended when Virginia’s captain became concerned they would miss the high tide and not be able to make it over a sand bar and back to port.
At dawn the next day, March 9, Virginia returned to finish off the Minnesota. During the night, however, the Federals had managed to reach the scene of battle with the new USS Monitor. As the Virginia approached the Minnesota, the Monitor interceded. The resulting engagement lasted most of the day, with the Monitor and the Virginia pounding each other, often at point-blank range, with little effect. Despite their other flaws, each ship’s armor was very effective against the other’s shells. At one point the Virginia tried to ram the smaller Monitor, but without her iron ram this tactic failed. At the end, the Monitor and the Virginia disengaged, each thinking the other was quitting, and each claiming victory.

Turret of the Monitor, dented by shells

Vox’s Take:
You know how some innovations can go for decades before they catch the world’s attention? That’s not the case here. News of the “Battle of the Ironclads” sent a shock wave through the navies of the world, as everyone recognized immediately that wooden-hulled ships were hopelessly obsolete compared to the ironclads. The revolving turret was also an extremely important innovation, because for the first time you did not have to position the whole ship in order to bring your guns to bear on an opponent. This made the Monitor, not the Virginia, the model for future warship development.
Neither ship fought again, and neither survived the year. In May, the Virginia was ordered blown up by her own Navy in order to avoid capture, and in December the Monitor foundered and sank in rough seas. However, their one battle changed the course of naval warfare as radically as the switch from sails to steam.

Sources:
[1] Battle_of_Hampton_Roads, Wikipedia
[2] The Battle of the Ironclads, CivilWarHome.com
[3] USS Monitor (1862-1862), Naval Historical Center
[4] National Archives