The US Navy's recent visit to a vital WWII hub is another sign it's thinking about how to fight in the Pacific
- One of the Navy's two submarine tenders visited Ulithi Atoll in the Western Pacific earlier this month.
- Tenders can support subs and surface ships, and the visit to the atoll, a major logistics hub during World War II, again shows the Navy is thinking about how it could keep its ships going in a conflict in the Pacific.
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When the USS Emory S. Land, one of the Navy's two submarine tenders, sailed into the Ulithi Atoll on December 7, it was a return to a major hub for US operations in World War II and yet another sign the US military is thinking about how it would fight a war in the Pacific.Only four of the atoll's 40 small islands are inhabited, but they all surround one of the world's largest lagoons, which was a vital jumping-off point for the Navy as it island-hopped closer to the Japanese mainland during the war.
The Philippines, which includes Leyte Gulf, and the Japanese islands, including Okinawa, are part of the Pacific's first island chain, of which Taiwan is also part.Farther east is the second island chain, comprising Japan's volcanic islands, which include Iwo Jima, and the Mariana Islands, which are administered by the US and include Guam, where the Land and fellow tender USS Frank Cable are stationed.
"It's a convenient place to operate that's relatively close but not so close that you're going to be exposed to large numbers of either Chinese forces or Chinese missile attack, potentially," said Bryan Clark, a senior fellow at the Center for Strategic and Budgetary Assessments.
While underway replenishment is common for the Navy today, calm waters inside atolls like Ulithi still make them valuable spots to resupply submarines and surface ships."One thing you can't do while you're underway is rearming. So a ship that launches a bunch of missiles ... they can't just send the missiles over and reload them at sea," said Clark, who was a Navy submariner and led development of strategy as special assistant to the chief of naval operations.
"You pretty much have to pull into port" to rearm, Clark said. "So this would be a way to have the ship pull into the atoll, have the tender load up the missiles in the [vertical launching system] magazine, and then the ship can go back out rearmed," Clark added.
In a conflict, the release said, Ulithi "could again represent a logistical hub capable of supporting the fleet."
Not just submarines
"They're designed mainly for submarines because submarines have more maintenance requirements, but they actually do maintenance on surface ships as well," Clark said.They mostly do are minor repairs, but they can work on more complex systems like nuclear reactors. Tenders also have dive teams that can do perform repairs on the hull and its coating in the water.
"They can do welding. They can do hull repair. They can do replacement of components. They can remove interference that's in the way of replacing a pump or something," Clark added. "So they can do lots of relatively heavy maintenance that just doesn't require dry-docking."These kinds of fixes can extend how long a warship is suited for combat before it must return to an industrial hub for an overhaul. The Land's visit to Ulithi was meant "to demonstrate the submarine tender's ability to return to Ulithi and successfully anchor within the lagoon," the release said. Luckett said it showed the Land could "do all of the things needed inside the lagoon without any support from external sources."
"The idea," Clark said, is that the tenders would provide support "not just for submarines but also for surface ships. That's probably the the bigger purpose of putting it into the atoll ... to support surface combatants."
Keeping the fight going
The Navy has "been putting time and research into how you might do it. They actually haven't been making that many investments changing how they do the logistics," Clark said, but there have "been analyses and studies and some technical research on different techniques."
One of those was illustrated in October, when sailors used a small drone to deliver a 5-pound package to a sub about a mile off the coast of Oahu in Hawaii."What started as an innovative idea has come to fruition as a potentially radical new submarine logistics delivery capability," a Navy officer said at the time. "A large percentage of parts that are needed on submarines weigh less than 5 pounds, so this capability could alleviate the need for boats to pull into ports for parts or medical supplies."
But it would still provide some safety benefit and save time by obviating the need for a sub to sail into port to get those supplies - and in a conflict in the western Pacific, where China could sortie a lot of subs quickly, timing could make all the difference.Plus, success with a small drone now could lead to bigger advantages in the future.
"If you take that and extrapolate," Clark said, "a larger drone could cover a longer distance and maybe do the same operation, so now I do get a more distributed supply network.""If you had a bigger UAV, like a Fire Scout or something, that could go for three hours and might cover a couple of hundred miles. Well, then maybe ... that'll allow you to spread out your logistics networks," Clark added, referring to an unmanned helicopter the Navy wants to use aboard littoral combat ships. "Now the ship with a couple of Fire Scouts can cover a lot more area than it could if it was just doing it by itself."
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