Tue, Apr 17, 2007 - Page 2 News List

Feature: World's longest-serving sub feted

By Jimmy Chuang  /  STAFF REPORTER

The Navy's Guppy-class SS-791 Sea Lion submarine, its oldest vessel still in service, sits at port in this Feb. 18 file photo.


The Navy celebrated the 63rd birthday of its oldest vessel -- the Guppy-class SS-791 Sea Lion submarine -- last Thursday.

The SS-791 was not only celebrating its 63rd birthday, but also its 34th year of service in the Navy. Along with the SS-792 Seal, the SS-791 is one of two existing "miracles" in the navy, as it is the oldest submarine still in service.

As part of the Mutual Defense Treaty between the US and the Republic of China (台美協防條約), in 1970 the US gave the SS-791 and SS-792 to the Taiwanese Navy -- after serving 28 years in the US Navy.

In 1973, Captain Kuan Chen-ching (關振清), the first captain of the SS-791, led crewmembers for training in the US.

During the ceremony last Thursday, Rear Admiral Wang Hsi-ling (汪希苓), Taiwan's military attache to the US who oversaw the arrangement in the 1970s, officially accepted the two vessels on behalf of Taiwan.

With old piping, big knobs and rudders, old panels, limited space and the pervasive oil smell, the interior of the submarine is strikingly reminiscent of scenes from World War II movies. Sonars and torpedo systems complete the experience.

Among the 75 sailors on board, only the captain enjoys a private room -- and it is smaller than one ping. Everybody else, including the first officer, shares a public room for sleep. Regular meals are provided by a kitchen approximately two pings in size. It takes more than an hour for everybody on board to finish their meal as only 20 people can fit in the dining room at any given time.

With its 5,200 horsepower diesel engine, the SS-791 was initially capable of completing a non-stop 8,350km trip in approximately 45 days. Top speed under water was 12 knots and 16 knots on the surface.

A rumor that could have proven harmful to the navy's image and affect sailors' morale haunted the vessel since its acquisition, however. Some believed there was a real chance that after diving, the two Guppy-class subs would never resurface.

But SS-791 Warrant Officer Liu Tsai-hsin (劉財心) explained why the rumor never turned into reality.

"There is an air tank inside the vessel. When the submarine is on the surface, its entire weight is approximately 1,800 tonnes. When we need to dive, however, the air tank will take in 3,000 pounds [1,360kg] of air, turning the vessel into a 2,400-tonne rock. The system may be old, but it is reliable," Liu said.

Between 1944 and 1946, the US built 45 Tench-class submarines. Fourteen of those were upgraded to Guppy-class in 1950, including the SS-791.

Prior to joining the Taiwanese fleet, the SS-791 was known as the USS-478 Cutlass. It was built in the Portsmouth Naval Shipyard in Kittery, Main, and completed on Nov. 5, 1944.

The vessel was initially equipped with 10 torpedo launch tubes and sonar systems, with 11 officers and 70 petty officers and sailors.

But the US government's plan to help Taiwan's destroyer fleet conduct anti-submarine warfare resulted in the removal of all torpedo systems from the sub before it was handed over.

After it came into service, the Navy tried to restore its torpedo capability, but its indigenous system never reached optimal operability and the SS-791 was eventually allocated for training purposes.

The Navy's Fleet 256 chief of staff Rear Admiral Yang Yi (楊木益) believes the SS-791 can still make a contribution to the training of the Navy's next generation of officers.

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