Thursday, October 29, 2026

Extracting the Caimanera Mines Guantanamo Bay Spanish American War

Sailors dragging water for mines

(Most of this article is based on official Naval Records and “Lifting the Caimanera Mines,” an article by Arthur H. Dutton in The Overland Monthly Magazine, July 1904. The illustrations are adopted from photos published in the Dutton article. The infographic on the mine is original.)

The Texas had already hit a mine. So had the Marblehead, and both ships were still afloat.

 

That was the good news. The bad news was that nobody knew how many more mines were waiting under the water.

 

It was June 1898. American warships were pushing into Cuba’s Guantánamo Bay. They’d secured the lower harbor, but getting farther inland toward Caimanera meant crossing water the Spanish had turned into a floating ambush.

 

A mine didn’t need a gun crew or good aim. It just had to sit there until something expensive bumped into it.

 

The Texas and Marblehead had caught mines with their propellers during a bombardment on June 15. Somehow, they hadn’t gone off.

 

You could call that luck, but you couldn’t build a naval campaign around getting lucky twice.


Commander Bowman McCalla of the Marblehead decided the mines had to come out. Commander H. W. Lyon of the Dolphin would help, and the sailors in their small boats would handle the unpleasant end of the arrangement.


Gunboats Dolphin and Marblehead bombing trenches on shore


Their equipment wasn’t much to look at. Two steam launches, a chain dragged between them, some tools, and smaller boats trailing behind.

 

They’d sweep the chain through the channel until it caught a mine’s mooring. Then they’d haul the mine up and deal with it.

 

It sounds simple until someone has to lean over the side of a boat and put his hands on it. A projecting contact arm, an unexpected movement, a boat rocking at the wrong moment—and that’s all she wrote.

 

They packed rifles and small rapid-fire guns in case the Spanish interfered; and bandages and tourniquets in case the Spanish succeeded.

 

Back aboard the warships, sailors piled bedding-filled hammocks around the exposed guns. Neither vessel had armor to keep rifle bullets out of its gun crews, so mattresses and blankets would have to do.

 

On the morning of the expedition, the launches headed out with the Marblehead and Dolphin following. Behind them lay Camp McCalla, supply ships, and a harbor that looked almost peaceful.


Diagram showing the mines at Caimanera and how they operate

Ahead lay the minefield. The men hadn’t gone far before the boats stopped and began easing together.

 

They caught one. Now, they had to bring it up without setting it off.

 

The mine came out of the water coated with weed and barnacles, looking like something that belonged on the bottom. Every man handling it had good reason to wish it had stayed there.

 

The crews worked to keep its contact gear from moving while they disabled it. A Navy account describes wedges used to hold the arms in place until the primer could be removed.

 

The work required steady hands. Unfortunately, those hands were attached to men sitting in small boats on the water.

 

Once the mine was safe, they put it in a trailing boat and took it to the Dolphin. Then they went back for another.

 

The barnacles raised an interesting possibility. Marine growth could jam the moving parts, which might explain why the mines caucht by the Texas and Marblehead had not exploded.


Sailors on an American warship during Spanish American War

That didn’t make the next one safe. It just meant some barnacles might’ve done the Navy an enormous favor.

 

Meanwhile, the men had another problem. Spanish troops still held stretches of the shore, and the launches made inviting targets.

 

A rifleman didn’t have to sink a boat to wreck the operation. Hitting a man while he handled a mine could be enough.

 

When figures appeared among the trees on Cayo del Hospital, the Marblehead lowered boats full of marines. The Spaniards cleared out before the landing party could get at them.

 

More riflemen showed up near Hicacal Point. They lost interest when the Dolphin pointed its guns their way.

 

By the midday break, the crews had recovered seven mines. They’d also cleared more than a mile of channel, giving the ships behind them a little more room to maneuver.


Sword drill on an American warship during Spanish American War

The sailors stopped to eat and rest. Along the shore, Spanish troops got busy digging.

 

That afternoon, a lookout on the Dolphin spotted men near a bluff overlooking the area where the launches had been working. A closer look showed they were preparing firing positions.

 

They evidently expected the small boats to come back. The Dolphin got there first.

 

It shelled the unfinished works, and the Marblehead came up to help. Whatever protection the Spaniards hoped to get from their new trenches, they hadn’t finished digging it yet.

 

The launches kept working over the following days. Mine after mine came up, each one requiring another careful bit of handling before anyone could relax.

 

One recovered mine carried a deep dent where a ship had struck it between its firing points. A little farther either way, and the ship might’ve left a very different souvenir.

 

The June sweep opened the channel, but it didn’t finish the job. American sailors were still clearing mines from the approaches to Caimanera in late July when a later operation recovered and disabled another 27.

 

By then, Spain’s fleet had been destroyed off Santiago, and the fighting in eastern Cuba was winding down. The mines, of course, hadn’t received the news.

 

They still had to be found and brought up.

 

The big ships got the attention with their heavy guns, towering smoke, and photographs fit for the front page. But getting those ships safely through the water came down to men in tiny boats, dragging a chain until it caught something nobody wanted to touch.

 

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