HMCo #425p APc1

"Model of AMc Mine Sweepers [preceding two words crossed out and replaced with] Transports, Apr[il] 1942.
Scale 3/8" = 1.
Templets[sic] made from Bureau of Ships Plans 446519 [and] 446513 and Eldridge-McInnis.
Design No. 287-C-728 Plan No 1.
In order to come fair the model differs from lines as follows:
Waterlines are fuller amidships with more tumble home.
Buttocks are raised forward of sternpost, deadwood faired.
Frame spaces 18.4".
Stations are 3-frame spaces or 4.6', except # 11 - # 11A which is 4-frame spaces or 6.132'.
Deduct 2 3/4" for planking.
Deduct 2 7/8" for deck.
Load W.L. is 10'-0" above base.
Stem as per Eldridge-McInnis plan E-McI. Hull No. 274, Sheet 1.
Bureau of Ships Plan No. 446513." (Source: Herreshoff, A. Sidney DeW.? [Penciled note in Offset Booklet HH.4.082.] Haffenreffer-Herreshoff Collection, MIT Museum, Cambridge, MA.)

"Two more minesweepers are to be launched at the Herreshoff Boatyard within the next few days. Tomorrow [July 18, 1942] at 2 o'clock at the lower at the lower yard Mr Thomas P. Brightman will perform the traditional christening ceremony as the first minesweeper [#425p APc1] slides down the ways.
On Tuesday afternoon [July 21, 1942 but actually only on August 8, 1942], the second ship [#426p APc2] will be launched at the lower yard with Mrs. Sidney Herreshoff breaking the bottle over the bow." (Source: Anon. "Two Minesweepers To Be Launched Soon." Bristol Phoenix, July 17, 1942, p. 2.)

"APc-1 Class Small Coastal Transport
Originally planned as Coastal Minesweeper AMc-164
Laid down, 18 May 1942, at Herreshoff Manufacturing Co., Bristol
Launched, 9 July 1942
Commissioned USS APc-1, 1 October 1942
Decommissioned, date unknown
Struck from the Naval Register, date unknown
Final Disposition, fate unknown
Specifications:
Displacement 100 t.(lt) 234 t.(fl)
Length 103'
Beam 21' 3"
Draft 9' 3"
Speed 10kts
Complement 3 officers, 22 enlisted
Armament four single 20mm AA gun mounts
Propulsion one 400shp National Supply Corp. MML-6 diesel engine, one shaft." (Source: http://www.navsource.org/archives/09/23/23001.htm, retrieved March 29, 2011.)

"Class: APC-1
Design: Navy APC-1
Displacement (tons): 161 light, 258 lim.
Dimensions (feet): 103.25' oa, 98.2' wl x 21.25' e x 9.25' lim.
Original Armament: 4-20mm single
Later armaments: 2-20mm single (1943: APc 87-90, 93-98, 110-111)
Complement: 21 (1944)
Speed (kts.): 10
Propulsion (HP): 400
Machinery: Diesel, 1 screw
APc-1; [contracted: ] 19 Feb 42; [builder: ] Herreshoff Mfg; [keel laid: ] 18 May 42; [launched: ] 19 Jul 42; [commissioned: ] 1 Oct 42; [decommissioned: ] 19 Feb 46; [struck: ] 12 Mar 46; [disposed: ] 20 Jun 47; [fate: ] Maritime Commission / Delivery; [MA sale: ] 19 Jun 47; [note: ] Ex AMc-164. Sold (delivered) by MC to George Fulton, Fulton Construction Co., Houston, Texas. Merc. COMER PLUMMER 1947. ..." (Source: Roberts, Stephen S. "Class: APC-1." Compiled October 26, 2008. http://www.shipscribe.com/usnaux/APC/APC01.html, retrieved October 25, 2011.)

"APc-1. Built in 1942 by the Herreshoff Manufacturing Co., Bristol, Rhode Island.
Commissioned on October 1, 1942, under Lt. (jg) Francis E. Shine, Jr., USNR. Operated in the Pacific and decommissioned on February 19, 1946, at San Francisco.
Registered in 1947 by the Pure Oil Co., Box 1500, Port Arthur, Texas, as the 197-ton oil exploration vessel Comer Plummer, call sign WB4729 in 1949. Comer Plummer, 55, was vice president of production.
Registered in 1963 by Tideland Specialty Co., Inc., 7711 Bowie St., Houston. Texas, as the 197-ton vessel Sea Contractor, call sign WB4729. Foundered on February 6, 1965 in the Gulf of Mexico.
ON 253970." (Source: Williams, Greg H. World War II Vessels in Private Hands. Jefferson, NC, 2013, p. 12.)

"Twenty-two of these 'jacks of all trades' were built between October 1942 and July 1943 --- with an average of nearly one of these 103-footers each week. Each cost $145,750, and they appear to have been contracted for in two batches, with the lead ship [#425p] of the class (APc 1) included in the first batch of ten; APc 85 [#500p] through APc 96 [#511p] constituted the second batch. It was an impressive rate of production, especially so because the APcs were built concurrently with eight 71-foot British Vosper torpedo boats, which were built in the South Construction Shop." (Source: Bray, Maynard and Carlton Pinheiro. Herreshoff of Bristol. Brooklin, Maine, 1989, p. 226-227.)

"[Item Description:] Penciled sketch and displacement calculations titled on bottom 'Displacement of # 425 [#425p APc1 Naval Coastal Transport] as she trimmed Aug. 20, 1942' [total displ. 128 1/4 short tons]." (Source: MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.008. Calculations. Box HAFH.6.1B, Folder Hull No. 408p. 1942-08-20.)
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Note: This list of archival documents contains in an unedited form any and all which mention #425p APc1 even if just in a cursory way. Permission to digitize, transcribe and display is gratefully acknowledged.

• Wee Winn and #425p APc1 (MIT Museum-made index card)
• Note: The vessel index cards comprise two sets of a total of some 3200 cards about vessels built by HMCo, with dimensions and information regarding drawings, later or former vessel names, and owners. They were compiled from HMCo's early days until 1920 and added to in later decades, apparently by Hart Nautical curator William A. Baker and his successors. While HMCo seems to have used only one set of index cards, all sorted by name and, where no name was available, by number, later users at MIT apparently divided them into two sets of cards, one sorted by vessel name, the other by vessel number and greatly expanded the number of cards. Original HMCo cards are usually lined and almost always punched with a hole at bottom center while later cards usually have no hole, are unlined, and often carry substantially less information. All cards are held by the Francis Russell Hart Nautical Collections of the MIT Museum in Cambridge, Mass.

Year: 1942
E/P/S: P
No.: 425p
Name: APc1
OA: 103' 2 1/2"
LW: 98' 1 1/2"

Source: Vermilya, Peter and Maynard Bray. "Transcription of the HMCo. Construction Record." Unpublished database, ca. 2000.

Note: The transcription of the HMCo Construction Record by Peter Vermilya and Maynard Bray was performed independently (and earlier) than that by Claas van der Linde. A comparison of the two transcriptions can be particularly useful in those many cases where the handwriting in the Construction Record is difficult to decipher.

"The design of the APc Coastal Transport Class was based on that of the Eldredge McInnis-designed 93ft AMc Minesweeper, lengthened by a 6ft plug. [Information based on a plaque at the Herreshoff Marine Museum.]" (Source: van der Linde, Claas. December 14, 2008.)

"Built in 139 days (contract to launch; equivalent to $1043/day, 1612 lbs displacement/day)." (Source: van der Linde, Claas. January 16, 2024.)

"[Displacement 100 long tons.]" (Source: http://www.navsource.org/archives/09/23/23009.htm, retrieved March 29, 2011.)

Note: Research notes contain information about a vessel that is often random and unedited but has been deemed useful for future research.