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Canonicus (ACM-12)
Name: Major General Erasmus Weaver (1942—1944)
ACM-12 (1944—1955)
Canonicus (ACM-12) (1955—)
New Jersey (dates unknown)
Builder: Marietta Manufacturing Company, Point Pleasant, West Virginia
Laid down: as Maj.-Gen. Erasmus Weaver for the U.S. Army
Launched: 1942
Acquired: by the Navy, 1944
Renamed: Canonicus, 1 May 1955
Reclassified: MMA-12, 7 February 1955
Fate: Unknown
General characteristics
Class & type: Camanche-class minelayer
Displacement: 1,320 long tons (1,341 t) full
Length: 188 ft 2 in (57.35 m)
Beam: 37 ft (11 m)
Draft: 12 ft 6 in (3.81 m)
Speed: 12.5 knots (23.2 km/h; 14.4 mph)
Complement: 69 officers and enlisted
Armament: 1 × 40 mm gun

Canonicus (ACM-12) was a Camanche-class auxiliary minelayer in the United States Navy. It was named for Canonicus, a chief of the Narragansett Indians.

Canonicus was originally delivered to the United States Army Coast Artillery Corps, Mine Planter Service in 1942 by Marietta Manufacturing Company of Point Pleasant, West Virginia. The ship was named USAMP Major General Erasmus Weaver for Erasmus M. Weaver, Jr., the first chief of the National Guard Bureau.[1]

After serving in the Mine Planter Service of the U.S. Army Coast Artillery Corps, it was transferred to the Navy in 1944, classified ACM-12. ACM-12 was reclassified MMA-12, 7 February 1955 and assigned the name Canonicus on 1 May 1955.[2] Canonicus was never commissioned and thus never bore the "United States Ship" (USS) prefix showing status as a commissioned ship of the U.S. Navy.[3]

After being in reserve with the Navy the ship became a yacht, was converted to diesel, and became the Sandy Hook pilot boat New Jersey.[4]


  1. Colton, T. (December 19, 2011). "U.S. Army Mine Craft". Shipbuilding History. Retrieved 6 May 2013. 
  2. Naval History And Heritage Command. "Canonicus iv". Dictionary of American Naval Fighting Ships. Naval History And Heritage Command. Retrieved 6 May 2015. 
  3. Naval History And Heritage Command (January 6, 2015). "Ship Naming in the United States Navy". Heritage. Naval History And Heritage Command. Retrieved 6 May 2015. 
  4. Grover, David (1987). U.S. Army Ships and Watercraft of World War II. Naval Institute Press. p. 130. ISBN 0-87021-766-6. LCCN 87015514. 

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