Here at LSOZI, we are going to take off every Wednesday for a look at the old steam/diesel navies of the 1859-1946 period and will profile a different ship each week. These ships have a life, a tale all their own, which sometimes takes them to the strangest places. – Christopher Eger
Warship Wednesday, Aug. 15, 2018: Florida’s ancient sub-buster
Here we see, behind the striking young lady, is the Argo-class 165-foot (B) submarine chaser/cutter Nemesis (WPC-111) of the U.S. Coast Guard, taken during the 1953 Gasparilla Festival in Tampa. Nemesis was just under 20 at the time and had an interesting life both prior to and after this image was snapped.
The USCG’s two-dozen 165-footers were built during the early-1930s and they proved successful in WWII, with two sinking U-boats. Based on the earlier USCGC Tallapoosa (WPG-52), the 165-foot class of cutters was divided into two groups, the first designed primarily for derelict destruction and SAR, the second for Prohibition bootlegger busting:
The first batch, the six Class A vessels, were named after Native American tribes– Algonquin, Comanche, Escanaba, Mohawk, Onondaga, and Tahoma— and had a 36-foot beam, a 13.5-foot maximum draft, a sedate speed of 13 knots, and a displacement of 1,005 tons. We’ve covered a couple of this class of “beefy” 165s before to include USCGC Mohawk and cannot talk these hardy boats up enough. Tragically, one of these, USCGC Escanaba (WPG-77), was lost after encountering a U-boat or mine in 1943 with only two survivors.
The follow-on 18 WPCs in Class B were named after Greek mythos– Argo, Ariadne, Atalanta, Aurora, Calypso, Cyane, Daphne, Dione, Galatea, Hermes, Icarus, Nemesis, Nike, Pandora, Perseus, Thetis, Triton, and Electra. They were much lighter at 337-tons, narrower with a 25-foot beam, could float in under 10-feet of water (the designed draft was ~7ft.) and, on their suite of Winton diesels, could touch 16 knots while keeping open the possibility of a 6,400nm range if poking around at a much lower speed.
They were built between 1931 and 1934 at a series of five small commercial yards and were designed as patrol vessels. Their normal armament consisted of a dated 3-inch/23 caliber Mk 7 gun and two 37mm Mk. 4 1-pounders. Due to their designed role in busting up Rum Row, their small arms locker included a few Thompson M1921 sub guns, M1911s and a number of Springfield 1903s for good measure.

“Coast Guard planes from the Coast Guard Air Station Miami, Florida, greeting new 165-foot patrol boat PANDORA arrival December 6, 1934, to take station.” Top to bottom Flying Boat ACAMAR, Amphibian SIRIUS and Flying Boat A. As you note, the slimmer twin-funnel 165-foot (B) class sub chasers had a much different profile
The subject of our tale, Nemesis (can you get a better name for a warship?), was ordered for $258,000 from Marietta Manufacturing Co. at Point Pleasant, West Virginia, alongside her sisters Nike and Triton, in 1931. All three commissioned the same day– 7 July 1934– ironically some six months after Prohibition ended.
Nemesis and her 44-man crew (5 officers, 39 enlisted) set sail for St. Petersburg, Florida, where they would consider home for the rest of her (peacetime) career with the Coast Guard.
With tensions ramping up prior to the U.S entry to WWII, several East Coast 165s, to include Algonquin, Comanche, Galatea, Pandora, Thetis, and Triton, were on duty with the Navy after 1 July 1941 to assist with the Neutrality Patrol. The rest would follow immediately after Pearl Harbor. Armed with hastily-installed depth charge racks and a thrower and given a couple of Lewis guns for added muscle, they went looking for U-boats as the defenders of the Eastern Sea Frontier.

Nemesis’s sister, USCGC Argo on patrol displaying World War II armament and haze gray paint scheme. Note the 3″/50 forward.
The Gulf Sea Frontier, which included the Florida and Gulf coasts and parts of the Bahamas and Cuba, was defended in only rudimentary fashion during the early months of the war. Initial defenses consisted of the three Coast Guard cutters Nemesis, Nike, and Vigilant, together with nineteen unarmed Coast Guard aircraft and fourteen lightly armed Army aircraft.
In late February 1942 four ships were torpedoed in four days, and in May 41 vessels were sent to the bottom by hostile submarine action off the Florida coast and in the Gulf. As sinkings mounted alarmingly in the Gulf Sea Frontier waters, American defensive strength in the area began to increase rapidly and overwhelmingly.
Sister Icarus (WPC-110) in May 1942 depth-charged U-352, sinking the submarine off the North Carolina coast and taking aboard 33 of her survivors. Thetis (WPC-115) scratched U-157 north of Havana just a few weeks later. Meanwhile, at the same time, Nike (WPC-112) attacked and “likely sank” a surfaced U-boat off Florida’s Jupiter lighthouse then rescued 19 from a torpedoed Panamanian freighter.
Operating in the 7th Naval District on coastal patrol and convoy escort duty throughout the conflict, Nemesis rescued 28 from the Mexican freighter Faja De Oro, torpedoed by U-106 off Key West in May 1942, an attack that helped spark Mexico’s entry into the War against Germany.
The next month, Nemesis again had to pluck men from the Florida Straits. This time 27 men from the American-flagged SS Suwied, sank by U-107 on her way from Mobile to British Guyana.
Our cutter did not manage to bag a U-boat on her own, although she reported contacts on several occasions and dropped a spread several times. Between February and August 1942 she launched attacks on submarine contacts on at least five different occasions.
By 1944, Nemesis, like the rest of her class, had their armament replaced by two 3″/50 guns, two 20mm Oerlikons, 2 Mousetrap ASW throwers as well as more advanced depth charges and throwers. Nemesis was also one of just five of her class that carried SF-1 radar and QCN-1 sonar, sensors that the humble 165s were never designed for.
In 1945, the Navy selected six patrol vessels as its “Surrender Group” in the 1st Naval District including the three up-armed 165-foot Coast Guard cutters– Dione, Nemesis, and Argo. These ships helped process the surrender of at least five German submarines, U-234, U-805, U-873, U-1228, and U-858. Notably, U-234 was packed with sensitive cargo to include senior German officers and 1,200 pounds of uranium.

Kodachrome of German Submarine U-805 after surrendering to the U.S. Navy off Portsmouth, New Hampshire, on 16 May 1945. National Archives. Nemesis was part of the Navy’s “Surrender Group” handling these boats.
Nemesis received one battle star for her World War II service and chopped back to the USCG in 1946.
Postwar, Nemesis picked up her white scheme and, losing some of her depth charges, went back to St. Pete.

Closer to her festival picture at the beginning of the post. Note the extensive awnings. South Fla gets warm about 10 months a year. Also, note the 3″/50
By 1953, most of her class had been decommissioned with only Ariadne, Aurora, Dione, Nemesis, Nike, Pandora, Perseus and Triton still on active duty. On the East Coast, Triton was stationed in Key West and Nemesis was in St. Pete. Nike was in Gulfport, MS.
Decommissioned after a busy 30-year career on 20 November 1964, Nemesis was sold on 9 February 1966 in a public auction, going to Auto Marine Engineers of Miami who parted her out over the years. (One of her masts could be on the late PBS&J Corporation founder Howard Malvern “Budd” Post’s Waterside estate.)
Renamed Livingston’s Landing, her hulk was rebuilt by 1979 to look like a triple-decker African steamer and used as a floating restaurant in Ft. Lauderdale, picking up the name Ancient Mariner in 1981 while performing the same job. She was docked just west of where Hyde Park Market used to be, across from jail.

Via Florida Archives https://www.floridamemory.com/items/show/244782
Sadly, “the floating eatery was closed in 1986 by health officials as the source of a massive outbreak of infectious hepatitis” that sickened more than 80.
With nothing else going for her, the proud vessel was “purchased by the South Florida Divers Club of Hollywood for $6,000 and donated to Broward County’s artificial reef program. In June of 1991, the Nemesis, now called Ancient Mariner, was sunk as an artificial reef off Deerfield Beach.”
She is a popular dive site today resting just 50-70 feet deep. “A large Goliath Grouper guards the wreckage and can usually be found in the wheelhouse.”
Of her sisters, USCGC Ariadne (WPC-101), the last in federal service, was decommissioned 23 Dec. 1968 and sold for scrap the next year. Some went on to overseas service, including USCGC Galatea, Thetis, and Icarus, who remained afloat into the late 1980s with the Dominican Republic’s Navy. At least five of the class were bought by the Circle Line of NYC and converted to local passenger ferry work around the five boroughs.
Of the 24 various 165s that served in the Coast Guard and Navy from 1915-1968, a span of over a half century, just one, like Nemesis a B-model, remains in some sort of service.
Commissioned as USCGC Electra (WPC-187) in 1934, she was transferred to the US Navy prior to WWII and renamed USS Potomac (AG-25), serving as FDR’s Presidential Yacht for a decade. Struck from the Navy List in 1946, she was saved in 1980 and is currently open to the public in Oakland.

Ex-USS Potomac (AG-25) moored at her berth, the FDR pier, at Jack London Square, Oakland, CA. in 2008. Still floating in less than 7ft of water, as designed. Photos by Al Riel USS John Rogers.Via Navsource
As for the Coast Guard, they are increasingly recycling the old names of the classic 165s for their new class of 360-foot Offshore Patrol Cutters so it is possible that Nemesis will pop back up. Further, the service retains a number of old bells from the 165s as artifacts, such as from USCGC Comanche, below, which means the bell from Nemesis could very well be ashore somewhere on a Coast Guard base.
Specs:
Displacement:
334 long tons (339 t) trial
1945: 350 tons
Length:
160 ft, 9 in waterline
165 ft. overall
Beam: 23 ft 9 in
Draft: 7 ft 8 in as designed, (1945): 10 ft
Propulsion:
2 × Winton Model 158 6-cylinder diesel engines, 670 hp (500 kW) each
two shafts with 3-bladed screws
Fuel: 7,700 gals of diesel oil
Speed: 16 knots
Range: 3,000 nautical miles at 11 knots; 6,400 @6kts on one diesel.
Complement:
44 officers and men as designed
1945: 75 officers and men
Sensors: (1945) SF-1 radar and QCN-1 sonar
Armament:
Prewar:
1 × 3-inch /23 caliber gun
2 × 37mm one-pounders
Wartime (1945):
2 × 3-inch / 50 cal guns
2 × 20 mm guns
2 × Y-guns
2 × depth charge tracks
2 × Mousetrap anti-submarine rockets
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