Colberg Boat Works was a shipbuilding company in Stockton, California on the Stockton Channel. The original WWII office building burned to the ground in 2022. It was being prepared for moving to Brandon Island.To support the World War II demand for ships Colberg Boat Works built: Minesweepers, Type V ship Tugboats, and Submarine chasers. The minesweepers were an Aggressive-class minesweeper and Agile-class minesweeper class. Colberg Boat Works was opened by two brothers in the late 1890s, William and Henry J Colberg. After World War II, Wilton, Jack and Gordon Colberg sons of Henry Colberg took over the company. The shipyard closed in 1990s. The yard located at 848 West Fremont Street, Stockton, California. The Colberg Boat Works yard was next to the Stephens Bros. Boat Builders yard. Colberg Boat Works was on the deepwater port on the Stockton Ship Channel of the Pacific Ocean and an inland port located more than seventy nautical miles from the ocean, on the Stockton Channel and San Joaquin River-Stockton Deepwater Shipping Channel (before it joins the Sacramento River to empty into Suisun Bay.shipbuildinghistory.com Colberg

Ships Original Name Original Owner Type Tons Feet Delivered Notes Hull # ship ID# O.N. John Freighter 250 109 1919 218594 San Joaquin County Ferry 1926 Service Freighters Inc. Freighter 100 64 1927 226540 Prospect Island John Lucas Tug 15 47 1931 230479 McCloud US Army Launch 40 1942 na Barge 37 US Army Barge 45 1943 na Barge 38 US Army Barge 45 1943 na YMS 95 US Navy Minesweeper 278 136 12-Mar-42 Struck in 1946 na YMS 97 US Navy Minesweeper 278 136 11-Apr-42 Struck in 1947 na YMS 99 US Navy Minesweeper 278 136 27-Apr-42 Struck in 1946 na YMS 383 US Navy Minesweeper 278 136 24-Feb-43 Foundered and sank in 1945 na YMS 384 US Navy Minesweeper 278 136 9-Apr-43 Grounded in 1945 and destroyed na YMS 385 US Navy Minesweeper 278 136 30-Apr-43 Mined and lost in 1944 na YMS 386 US Navy Minesweeper 278 136 23-Jul-43 Struck in 1946 na YMS 387 US Navy Minesweeper 278 136 17-Aug-43 Sold in 1946 na YMS 388 US Navy Minesweeper 278 136 24-Sep-43 Sold in 1947 na Anchor (ARS 13) US Navy Rescue Ship 1,089 183 23-Oct-43 Sold in 1947 na Protector (ARS 14) US Navy Rescue Ship 1,089 183 28-Dec-43 Sold in 1946; resold to Pakistan in 1952 na Extractor (ARS 15) US Navy Rescue Ship 1,089 183 3-Mar-44 Sunk accidentally in the Marianas and lost in 1945 na ATR 50 US Navy Tug 850 165 5-May-44 Disposed of 1946 na ATR 51 US Navy Tug 850 165 22-Jun-44 Disposed of 1946 na ATR 52 US Navy Tug 850 165 31-Jul-44 Disposed of 1946 na ATR 53 US Navy Tug 850 165 11-Sep-44 Disposed of 1946 na PCS 1402 US Navy Sub Chaser 278 136 13-Jan-44 na PCS 1403 US Navy Sub Chaser 278 136 17-Feb-44 To the Philippines as Laguna (PG 12) na PCS 1404 US Navy Sub Chaser 278 136 30-Mar-44 Later called Armistead Rust (AGS 9) 1945, Sold in 1948 na YP 645 US Navy Yard Patrol 120 1945 To MARAD 1947 na YP 646 US Navy Yard Patrol 120 1945 Fish and Wildlife Service as , later 261691 Paolina T M. & G. Torrente Fishing Vessel 107 73 1944 Now called Day Island 246265 Delta Boss Walnut Grove Marina Freighter 48 52 1945 Active 248990 Dora W Fishing Vessel 14 37 1946 Active 45-2 249930 How D Hai Fishing Vessel 20 48 1946 Active 249931 Victory II Delta Ferry Ferry 91 58 1947 Active 251903 Aimee June Fishing Vessel 14 37 1947 Active 251931 Dynamic (MSO 432) US Navy Minesweeper 780 7-Feb-54 To Spain 1974 as Guadalete (M 41): Struck in 1998 na Engage (MSO 433) US Navy Minesweeper 780 29-Jun-54 Scrapped in 2002 na Embattle (MSO 434) US Navy Minesweeper 780 16-Nov-54 Sold in 1976, scrapped in 1993 na Mary T Fishing Vessel 13 53 1955 Now called Elizabeth 269589 Edythe Wes Anderson Eng. Ind. Vessel 36 50 1955 Active 54-1 538926 Harbor King Golden Gate Scenic SS Ferry 77 62 1958 Active 276748 Standard No. 4 Standard Oil of CA Tug 186 74 1958 Now called William R 276863 Albacore Fisheries Patrol 95 82 1958 Now called Sea Scout Ship Chaser 277776 Chena Crowley Marine Tug 91 47 1959 Active 278711 Harbor Princess Golden Gate Scenic SS Ferry 98 82 1959 Active 278851 American River Harbor Tug & Barge Tug 134 84 1961 Now called Cassie Lind 287201 Royal Prince Golden Gate Scenic SS Ferry 98 83 1962 Active 288705 San Joaquin River Harbor Tug & Barge Tug 140 64 1964 Active 63-2 295630 Napa River Harbor Tug & Barge Tug 136 64 1967 Now called Petaluma 66-6 508762 Drake Recreational 72 61 1967 Now called Phoenix 67-25 510718 Harbor Emperor Golden Gate Scenic SS Ferry 94 83 1968 Active 513351 Prudhoe Bay Global Diving Ind'l. Vessel 50 58 1969 Active 520254 Manson 44 Manson Construction Barge 642 150 1968 Now called DS44 524054 Irene Lauritzen Salt River Const'n. Tug 40 47 1970 Active 69-3 525655 Kavik River Crowley Marine Tug 105 64 1970 Active 526289 Kuparuk River Crowley Marine Tug 105 64 1970 Active 526290 Catalina Prince Catalina Cruises Ferry 97 127 1971 Now called Alcatraz Flyer 71-1 533655 San Francisco SF Bar Pilots Pilot Boat 119 78 1973 Now called R/V Zephyr 72-18 545818 Catalina King Catalina Cruises Ferry 97 127 1974 Active 73-2 548119 Catalina Empress Catalina Cruises Ferry 97 127 1974 Now called Alcatraz Clipper 557225 Toolik River Crowley Marine Tug 105 64 1974 Active 74-2 557339 Lassen Shaver Tptn. Tug 136 66 1975 Active 562754 Sag River Crowley Marine Tug 105 64 1975 Active 75-1 564493 Catalina Monarch Catalina Cruises Ferry 97 127 1976 Now called Bay Monarch 76-1 572538 California SF Bar Pilots Pilot Boat 130 80 1976 Now called Drake 76-2 578339 Catalina Countess Catalina Cruises Ferry 97 127 1976 Now called Statue of Liberty V 77-1 582287 Royal Knight Harbor Breeze Corp. Ferry 59 78 1979 Now called Kristina 79-1 611286

See also California during World War II Maritime history of California Moore Equipment Company in Stockton Hickinbotham Brothers Shipbuilders in Stockton Moore Equipment Company in Stockton Wooden boats of World War 2 Cryer & Sons

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