classified as gunboats:
more than 1000 t of displacement:
| No | Name | Launched // Comm. | Builder | Displacement, t | Dimensions, m | Speed, kts | Machinery, power, hp | Armament | Fate |
| PG52 | Niagara (ex-Hi-Esmaro) | 7/6/1929 // 1/1941 | Bath I W | 1922 | 81.4x10.8x5.2 | 16 | 2diesels, 3000 | 2-76/50 | motor torpedo boat tender AGP1 1/1943 |
| PG53 | Vixen (ex-Orion) | 1929 // 2/1941 | Germaniawerft, Kiel, Germany | 3774 | 101.6x14.2x4.9 | 15 | 2diesels, 3600 | 4-76/50, 2 DCR | stricken 7/1946 |
| PG54 | St. Augustine (ex-Noparo) | 1929 // 1/1941 | Newport News | 1720 | 83.0x11.0x4.4 | 14 | turbo-electric | 2-76/50 | collision 5/1/1944 |
| PG55 | Jamestown (ex-Alder) | 1928 // 5/1941 | Pusey & Jones, Wilmington | 2250 | 89.6x11.6x4.9 | 15 | 2diesels, 3000 | 2-76/50, 6-20 | motor torpedo boat tender AGP3 1/1943 |
| PG56 | Williamsburg (ex-Aras) | 8/12/1930 // 101941 | Bath I W | 1820 | 74.3x11.0x4.3 | 16 | 2diesels, 2200 | 2-76/50, 3 DCT | general communications vessel AGC369 11/1945 (presidential yacht), stricken 4/1962 |
| PG57 | Plymouth (ex-Alva) | 1931 // 4/1942 | Germaniawerft, Kiel, Germany | 1500 | 80.6x14.1x5.8 | 15 | 2diesels | 1-102/50, 2-76/50 | sunk 5/8/1943 |
| PG58 | Hilo (ex-Moana) | 18/7/1931 // 61942 | Bath I W | 2350 | 75.4(pp)x11.6x | 14.5 | 2diesels, 3000 | 1-76/50 | motor torpedo boat tender AGP2 1/1943 |
| PG59 | San Bernardino (ex-Vanda) | 3/10/1928 // 6/1942 | Bath I W | 1768 | 73.2x11.1x4.9 | 17 | 2diesels, 3000 | 2-76/50, 2-40 | stricken 5/1946 |
| PG60 | Beaumont (ex-Carola) | 1930 // 6/1942 | Germaniawerft, Kiel, Germany | 1434 | 68.9x10.6x3.9 | 15.5 | 2diesels, 2200 | 2-76/50, 2-40 | for disposal 2/1947 |
| PG61 | Dauntless (ex-Delphine) | 2/4/1921 // 5/1942 | Great Lakes, Ecorse | 1950 | 78.5x10.7x5.0 | 16 | 2VTE, 3 boilers, 3000 | 2-76/50 | for disposal 6/1946 |
| WPG72, 4/1943- PG72, 12/1943- WPG122 | Nourmahal | 1928 // 8/1940 | Germaniawerft, Kiel, Germany | 2250 | 65.7x12.7x6.7 | 15 | 2diesels, 3200 | 2-102/50, 2 DCR | Coast Guard cutter, to Navy 6/1942, to Coast Guard 12/1943, for disposal 7/1948 |
| PG85 | Corsair | 1899 // 4/1942 | Fletcher, Hoboken | 1136 | 92.7x10.2x | 19 | 2-76/50 | survey vessel AGS3 Oceanographer 8/1942 |
classified as patrol yachts:
more than 1000 t of displacement:
| No | Name | Launched // Comm. | Builder | Displacement, t | Dimensions, m | Speed, kts | Fuel, t | Armament | Fate |
| PY1, 10/1943- WPG183 | Mayflower (ex-Ogden Goelet) | 1896 // 3/1898 | Thompson, Clydebank, UK | 2690 | 83.2x11.0x | 17 | 2VTE, 2400 | 6-57 | presidential yacht, patrol yacht 7/1920, sold 10/1931, Coast Guard cutter 10/1943, for disposal 1/1947 |
| SP609, 7/1920- PY6 | Nokomis (ex-Nokomis II) | 1914 // 12/1917 | Pusey & Jones, Wilmington | 1265 | 74.1x9.7x | 16 | 4-76 | stricken 5/1938 | |
| SP136, 7/1920- PY9 | Niagara | 1898 // 4/1918 | Harlan & Hollingsworth, Wilmington | 2690 | 86.0x13.1x | 12 | 4-102, 1 DCT | stricken 12/1931 | |
| PY16 | Zircon (ex-Nakhoda) | 1929 // 1941 | Pusey & Jones, Wilmington | 1220 | 71.7x10.4x | 14 | 2diesels, 1100 | 2-76/50, 2-20, 2 DCR | stricken 6/1946 |
| PY22 | Azurlite (ex-Vogabondia) | 1928 // 3/1942 | Germaniawerft, Kiel, Germany | 1080 | 64.3x10.4x | 12 | 2diesels, 800 | 2-76/50 | for disposal 1/1947 |
| PY23 | Beryl (ex-Rene) | 1929 // 3/1942 | Pusey & Jones, Wilmington | 1400 | 68.6x10.4x | 14 | 2diesels, 1100 | 2-76/50 | to Maritime Commission 10/1946 |
| PY25 | Crystal (ex-Vida) | 1929 // 2/1942 | Pusey & Jones, Wilmington | 1400 | 68.6x10.4x | 18 | 2diesels, 1100 | 2-76/50 | to Maritime Commission 4/1947 |
| PY26 | Cythera (ex-Agawa) | 20/9/1906 // 3/1942 | Ramage & Ferguson, Leith, UK | 1000 | 65.5x8.4x | 12 | 1VTE, 1350 | 3-76 | commissioned at first time 10/1917-3/1919, sunk 2/5/1942 |
| PY28 | Marcasite (ex-Ramsis) | 1925 // 5/1942 | Lawley, Neponset | 1130 | 68.6x9.9x | 12 | 1diesel | 2-76/50, 1 DCT | stricken 10/1944 |
| PY30 | Hydrographer | 1928 // --- | Spear, Norfolk | 1135 | 51.1x9.6x | 10 | 1diesel-electric, 650 | 1-76/50 | commissioned as survey vessel AGS2 5/1942 |
| PY32 | Southern Seas | 1920 // 12/1942 | Consolidated | 1116 | 69.5x9.5x | 11 | 2diesels, 750 | small guns | foundered 9/10/1945 |
100 - 1000 t of displacement:
| PY3 Scorpion (ex-Sovereign) (1896, 775, 4/1898 - 3/1929), PY4 Vixen (ex-Josephine) (1896, 806, 4/1898 - 1/1923), PY5 Sylph (1898, 152, 8/1899 - 4/1929), PY7 Aramis (1916, 375, 11/1917 - 7/1933), PY8 Despatch (1913, 237, 8/1917 - 5/1928), PY10 Isabel (1917, 710, 12/1917 - 2/1946), PY11 Wenonah (1915, 470, 2 - 76, 10/1917 - 1/1928), PY12 Sylph (ex-Intrepid) (1929, 810, 2 - 76/50, 10/1940 - 1/1946), PY13 Siren (ex-Lotosland) (1929, 720, 2 - 76/50, 11/1940 - 11/1945), PY14 Argus (ex-Haida) (1929, 890, 1 - 76/50, 2/1941 - 5/1946), PY15 Coral (ex-Yankee Clipper, ex-Sialia) (1914, 790, 2 - 76/50, 6/1917 - 4/1920, 2/1941 - 7/1947), PY17 Jade (ex-Dr. Brinkley) (1926, 562, 1 - 76/50, 3/1941 - 3/1943 to Equador, 1/1944 - 1/1945), PC459, 2/1941- PY18 Turquoise (ex-Entropy) (1922, 565, 1 - 76/50, 12/1940 - 1/1944 to Equador (Nueve de Octobre)), PY19 Carnelian (ex-Seventeen) (1930, 500, 6/1941 - 10/1946), PY20 Tourmaline (ex-Sylvia) (1930, 750, 2 - 76/50, 9/1941 - 8/1945), PY21 Ruby (ex-Placida) (1929, 500, 2 - 76/50, 9/1941 - 8/1945), PY24 Almandite (ex-Happy Days) (1927, 705, 1 - 76/50, 4/1942 - 12/1946), PY27 Girasol (ex-Firenza) (1926, 700, 1 - 76/50, 5/1942 - 2/1946), PY29 Mizpah (ex-Allegro) (1927, 607, 2 - 76/50, 10/1942 - 9/1946), PY31 Cythera (ex-Abryl) (1931, 800, 1 - 76/50, 10/1942 - 11/1946) |
classified as coastal patrol yachts
more than 1000 t of displacement:
| No | Name | Launched // Comm. | Builder | Displacement, t | Dimensions, m | Speed, kts | Machinery, power, hp | Armament | Fate |
| PYc16 | Chalcedony (ex-Velero III) | 1931 // 2/1942 | Craig, Long Beach | 1000 | 59.5x9.1x | 11.5 | 2diesels, 850 | 1 - 76/23 | for disposal 10/1946 |
100 - 1000 t of displacement
| PYc1 Emerald (ex-Savitar) (1922, 104, 12/1940 - 11/1944), PYc2 Sapphire (ex-Buccaneer) (1922, 500, 2 - 76/50, 6/1941 - 9/1946), PYc3, 3/1944- WPYc3 Amethyst (ex-Samona II) (1931, 525, 2/1941 - 9/1946), PYc4 Agate (ex-AM78 Goldcrest, ex-Stella Polaris) (1930, 185, 2 - 76/23, 1/1941 - 10/1944), PYc5 Onyx (ex-Pegasus) (1924, 190, 1 - 76/50, 2/1941 - 2/1945), PYc6 Amber (ex-Polaris) (1930, 260, 1 - 76/50, 3/1941 - 11/1944), PYc7 Aquamarine (ex-Seawolf) (1926, 215, 2 - 76/23, 3/1941 - 1/1947), PYc8 Opal (ex-Coronet) (1928, 590, 1 - 76/23, 6/1941 - 9/1943 to Equador (Manabi)), PYc9 Moonstone (ex-Lone Star) (1929, 645, 1 - 76/50, 4/1941 - 16/10/1943), PYc10 Topaz (ex-Doromar) (1931, 160, 1 - 76/50, 3/1941 - 10/1944), PYc11 Andradite (ex-Guide) (1927, 395, 1 - 76/23, 4/1942 - 6/1947), PYc12 Sardonyx (ex-Queen Anne) (1928, 640, 1 - 76/50, 8/1941 - 10/1946), PYc13 Jasper (ex-Stranger) (1938, 395, 2 - 76/50, 7/1941 - 6/1948), PYc14 Truant (1892, 395, 2 - 76/50, 7/1941 - 12/1943), PYc15 Garnet (ex-Caritas) (1925, 490, 1 - 76/50, 7/1942 - 2/1947), PYc17 Pyrope (ex-Oceania) (1923, 490, 1 - 76/50, 3/1942 - 6/1946), PYc18 Peridot (ex-Bymar) (1938, 300, 1 - 76/50, 4/1942 - 1/1946), PYc19 Rhodolite (ex-Seapine) (1931, 588, 1 - 76/50, 3/1942 - 1/1946), PYc20 Jet (ex-Thalia) (1930, 472, 1 - 76/50, 4/1942 - 9/1947), PYc21 Alabaster (ex-Ronaele) (1932, 385, 1/1942 - 1/1946), PYc22 Olivin (ex-Bidou) (1930, 120, 1 - 76/50, 4/1942 - 11/1944), PYc23 Sard, 3/1942- YP261 (ex-Navigation) (,, 1/1942 - 1940s?), PYc24 Iolite, 6/1942- YP454 (,, 1942 - 1940s?), PYc25 Phenakite (ex-Sachem) (1902, 360, 1 - 76/23, 7/1942 - 11/1945), PYc26 Cymophane (ex-Seaforth) (1926, 523, 1 - 76/50, 8/1942 - 6/1948), PYc27, 9/1945- WPYc27 Colleen (1928, 250, 1 - 76/50, 9/1942 - 3/1947), PYc28 Ability (ex-Reomar IV) (1926, 280, 9/1942 - 10/1945), PYc29 Gallant (ex-North Star) (1909, 350, 1 - 76/50, 4/1942 - 2/1945), PYc30 Vagrant (ex-YP258, ex-Vagrant) (1941, 425, 5/1942 - 9/1945), PYc31 Lash (ex-Sylph II) (1914, 339, 2 - 76/50, 6/1942 - 9/1944), PYc35 Felicia (1931, 447, 6/1942 - 10/1945), PYc36 Paragon (1929, 176, 9/1942 - 7/1944), PYc37 Mentor (ex-Haida) (1941, 182, 7/1942 - 7/1951), PYc38 Carolita (ex-Ripple) (1923, 236, 1 - 76/50, 11/1942 - 7/1944), PYc39 Marnell (1930, 180, 7/1942 - 1/1947), AM132 Eagle, 4/1942- PYc40 Captor (ex-Wave) (1938, 520, 1 - 102/50, 3/1942 - 10/1944), PYc41 Iolite (ex-Florence D) (1914, 200, 11/1942 - 10/1944), PYc42 Leader (ex-Curlew) (1927, 230, 10/1942 - 9/1946), PYc43 Sea Scout (ex-Velero II) (1922, 195, 3/1943 - 7/1944), WPYc346 Bedford, 3/1943- PYc44 Perseverance (ex-Condor) (1913, 190, 7/1942 - 5/1945), PYc45 Black Douglas (1930, 371, 4/1943 - 10/1944), PC454, 7/1943- PYc46 Impetuous (ex-Arlis) (1915, 103, 10/1940 - 10/1944), PC456, 6/1943- PYc48 Persistent (ex-Onwego) (1931, 110, 10/1940 - 10/1944), PC458, 7/1943- PYc49 Retort (ex-Evelyn R. II) (1923, 164, 1 - 76/50, 1/1941 - 10/1944), PC460, 7/1943- PYc50 Sturdy (ex-Elda) (1930, 380, 10/1940 - 11/1944), PC509, 7/1943- PYc51 Valiant (ex-Vara) (1929, 190, 1 - 76/50, 12/1941 - 10/1944), PC826, 7/1943- PYc52 Venture (ex-Vixen) (1913, 138, 3/1942 - 10/1945) |
Ship project history: ex-yachts, purchased by USN at war and used as patrols.
Modernizations: 1943, Mayflower: was armed with 1 - 127/51, 2 - 76/50, 6 - 20/70 guns, 1 Hedgehog DCT, 4 DCT, 2 DCR
Naval service: Cythera was sunk by German submarine U402 off North Carolina 2/5/1942. Plymouth was torpedoed 15/8/1943 by German submarine U566 off Cape Henry, VA. St. Augustine sunk 5/1/1944 off Cape May, NJ, after collision with tanker Camas Meadows. Southern Seas foundered during typhoon at Okinawa 9/10/1945.
Niagara 1942
Azurlite 1945
Sylph
Sapphire 1941
© Ivan Gogin, 2008-10