The US Navy Gato class submarine, USS Cobia SS-245 was ordered on 9 September 1940, laid down 17 March 1943 and launched on 28 November 1943. She was commissioned on 29 March 1944. She commenced her first war patrol from Pearl Harbour under the command of Lt. Cdr. Albert Lilly Becker on 26 June 1944.
Heading towards the Bonin Islands area, the USS Cobia had her first victory when she sank the Japanese guard boat Takamiya Maru (138 GRT) with gunfire east of Ogasawara-Gunto on 6 July and a week later on the 13th she sank the Japanese army cargo ship, Taishi Maru (2813 GRT) about 190 nautical miles north-west of Chichi Jima. Then, on 18 July 1944 USS Cobia torpedoed and sank the Japanese auxiliary gunboat Unkai Maru No.10 (851 GRT) north-west of Chichi Jima and west of Chichi Jima, the Japanese army cargo ship Nisshu Maru (7785 GRT), which was carrying a Japanese tank regiment to Iwo Jima, causing the loss of 28 tanks. The US Marine Corps considered this sinking critical to their success in capturing Iwo Jima six months later. Two days later, on 20 July, the submarine sank the Japanese auxiliary submarine chasers Yusen Maru No.3 (193 GRT) and Kaio Maru No.2 (62 GRT) north-west of Ogasawara-Gunto. Then on 5 August 1944 she sank Japanese transport ship Yayoi Maru (495 GRT) before ending her very successful first war patrol at Majuro in the Marshall Islands on 14 August 1944.
After refitting at Majuro from 14 August to 6 September 1944, Cobia sailed into the Luzon Strait for her second war patrol, which was punctuated by Japanese aircraft attacks, but did not result in any successful encounters with enemy shipping and she ended her patrol at Fremantle in Western Australia on 5 November 1944.
USS Cobia departed on her third war patrol, this time to the South China Sea on 30 November 1944. On 14 January 1945 she torpedoed and sank the Japanese minelayer Yurijima off the east coast of Malaya some 70 miles east of Kota Bharu and then returned to Fremantle on 24 January.
Her fourth war patrol commenced on 18 February when she was ordered into the Java Sea. On 26 February the Cobia engaged and sank two small Japanese vessels with gunfire in the Java Sea, but was damaged by return gunfire from one of the Japanese craft, which killed one crewman and damaged the radar equipment forcing the submarine to return to Fremantle to make repairs before recommencing the patrol and finally ending it at Subic Bay on 15 April 1945.
Cobia began her fifth war patrol on 9 May 1945, heading for the Gulf of Siam. On 8 June she torpedoed and sank the Japanese survey ship Hakusa (6799 tons) and the Japanese tanker Nanshin Maru No.22 (834 GRT) off southern French Indochina. On 18 June she returned to Fremantle to end her patrol. A month later on 18 July 1945, the USS Cobia began her sixth and final patrol, first inserting intelligence teams along the coast of Java, she sailed to Formosa before docking at Saipan on 22 August 1945, concluding her final war patrol.
Of Cobia’s six war patrols, the first, third, fourth, and fifth were designated as “successful” war patrols, for which she received four battle stars. She was credited with having sunk 13 ships, a total of 16,835 tons of shipping, as well as rescuing 7 downed airmen.
After the war she was decommissioned and placed on reserve on 22 May 1946. Recommissioned 6 July 1951, the submarine was used to train reservists and Submarine School students at New London until placed in commission in reserve at the Portsmouth Naval Shipyard 29 October 1953. After overhaul, she was towed to New London, where she was again decommissioned and laid up in the Atlantic Reserve Fleet on 19 March 1954.
By 1959, the Navy considered Cobia obsolete as a deployable warship and transferred her to the Milwaukee, Wisconsin Naval Reserve Center. There she served as a training platform for the next eleven years. She was redesignated an Auxiliary Submarine, AGSS-245, 1 December 1962.
On 1 July 1970, the Navy struck Cobia from the Naval Register, and on 17 August she was towed to Manitowoc, Wisconsin to serve as an international memorial to submariners. In 1986, Cobia was incorporated as a part of the Wisconsin Maritime Museum, which had evolved out of the submariner’s memorial to become the state’s maritime museum. USS Cobia was then declared a National Historic Landmark, and placed on the National Register of Historic Places.
The museum is one of the largest maritime museums in the region, preserving the heritage of the 28 submarines built there, by the Manitowoc Shipbuilding Company during WW2 and also the general maritime history of Wisconsin plus Great Lakes region. The museum covers 60,000 square feet of space which is home to over 85,000 artifacts including a collection of model boats, an operating steam engine as well as a display of over 50 historic vessels. It also acts as an official repository for retrieved shipwreck materials. But for the submarine enthusiasts, the highlight of the collection must be the USS Cobia, which is the most historically intact WW2 submarine in the USA. Visitors can go aboard for tours every hour during the museum’s opening times, which run from Wednesday thru Sunday.
But, if you’re really keen, go to Airbnb and book it as your overnight accommodation, then stay aboard and use it as your home base to explore the area.
According to their listing,
Sub Bnb sleeps up to 65 people in sailors’ bunks throughout the boat. The listed price includes the first five guests. Additional guests are $30 each.
Your stay will be as unique as the submarine. No two visits are exactly alike. With more than 65 different places to sleep, you get to choose your own adventure on USS Cobia.
USS Cobia is the best preserved submarine in the country. It has been meticulously restored with amenities added like heat and air conditioning, making it perfect for year-round overnight visits.
During your stay, you’re welcome to explore the submarine with a dedicated staff member. They will be your point of contact and on-site all evening. A personalized tour through the boat is available if desired.
USS Cobia is only accessible via stairs and there are seven bulkhead doors to climb through. The only access to get out onto the boat is through the museum.
We provide bedding, toiletries, a private tour of the submarine as well as coffee from a veteran-owned company in the morning. We also have WWII movies in the museum and board games for your use in the sub. Your stay includes admission to the museum during business hours.
Because we are an operational museum, our policies are a little different. You’re welcome to stay several nights, but we will pack up and secure your items during the day as the museum and sub are open for tours.
The restrooms on Cobia are 76 years old. They’re lovely, but they’re not functional. The Museum will be accessible for your usage at all times, with restrooms and showers available.
We’re happy to store your food in our catering kitchen inside the museum. You’re welcome to use the fridge, freezer and microwave in that kitchen. The kitchen is stocked with coffee, tea and light snacks for you to enjoy during your visit.
You’ll have access to the entire submarine and its deck from 6pm until checkout. You will also be given a key to enter the staff door of the museum so you can come and go as you please during your stay.
Other things to note
We clean the submarine extensively before and after every stay and throughout the day when we are open.
The provided bedding is professionally cleaned.
Masks are required in the museum when we are open to the public. Staff are required to wear masks when with you and other guests.
The submarine has a new HVAC system and air purifiers are placed throughout the submarine for additional sanitization.
The virtual tour video below gives a really good overview of the submarine, its layout, how it operated during the war and a tempting taste of what to expect for visitors and overnight guests… but without the smell of old diesel.
For more information or to book a tour, contact the museum below or visit their Airbnb listing.
The Wisconsin Maritime Museum
75 Maritime Dr
FWI 54220, USA
Phone: +1 920-684-0218
Open: Wednesday to Sunday. Contact the museum for specific times.
Please also check out my posts on the Submarine Combat Insignia awarded to submariners after a successful war patrol and a personalised set of USN officer’s ‘Dolphins’ insignia from an officer aboard the USS Skipjack (SS-184).
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