title: Colberg Boat Works
text: # Colberg Boat Works
  
  37°57′14″N 121°18′10″W﻿ / ﻿37.953860°N 121.302901°W﻿ / 37.953860; -121.302901
  
  Colberg Boat Works was a shipbuilding company in Stockton, California on the Stockton Channel. The original WW11 office building burned to the ground in 2023. It was being prepared for movan 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.
  
  ## 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,Sold in to Pakistan 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 US FWS Henry O'Malley 1948–1951, later FV Santa Rosa | | 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 |
  