HMCo #255p Electra Jr. [Launch for St. Y. Electra]

"Marine Engine of Inclosed Type. 3 1/2 & 5 & 8 x 4 1/2, 825[rpm], 48[hp]." (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)

"N/A"

"[Item Description:] Penciled technical sketch titled 'Condenser for HELIANTHUS 2nd (#299) to be made from 2 second hand condensers from ELECTRA launches [probably #255p and #257p]. 18 1/2sqft surface' and marked 'Scale 3/4ft per ft. Dec[ember] 8, 1918'." (Source: Herreshoff, N.G. (creator). Penciled Technical Sketch. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE11_02940. Folder [no #]. 1918-12-08.)
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Note: This list of archival documents contains in an unedited form any and all which mention #255p Electra Jr. [Launch for St. Y. Electra] even if just in a cursory way. Permission to digitize, transcribe and display is gratefully acknowledged.

• Electra Jr (HMCo-made index card)
• Electra Jr (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.

Name: Electra Jr.
Type: Gasoline
Length: 26'
Owner: Gerry, Eldridge T.

Source: Herreshoff Manufacturing Company. "A Partial List of Herreshoff Clients." In: Herreshoff Manufacturing Company. Herreshoff Yachts. Bristol, Rhode Island, ca. 1931.

• Electra Jr
• Note: The L. Francis Herreshoff index cards comprise a set of some 1200 cards about vessels built by HMCo, with dimensions and / or ownership information. Apparently compiled in the early 1930s, for later HMCo-built boats like the Fishers Island 23s or the Northeast Harbor 30s are not included. Added to in later decades, apparently by L. F. Herreshoff as well as his long-time secretary Muriel Vaughn and others. Also 46 cards of L. F. Herreshoff-designed vessels. The original set of index cards is held by the Herreshoff Marine Museum and permission to display is gratefully acknowledged.

Name: Electra Jr.
Type: 26' gasoline
Owner: Elbridge T. Gerry
Row No.: 190

Source: Herreshoff, L. Francis. "Partial List of Herreshoff-Built Boats." In: Herreshoff, L. Francis. Capt. Nat Herreshoff. The Wizard of Bristol. New York, 1953, p. 325-343.

Year: 1906
E/P/S: P
No.: 255
Name: Electra Jr.
OA: 26' 0"

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.

"Launch for steam yacht Electra, 173ft LOA, 161.4ft LWL, built 1884 by Harlan & Hollingworth, owned by Elbridge T. Gerry until 1912, when she was broken up." (Source: van der Linde, Claas. [Electra information from Hofman, Erik. The Steam Yachts. Lymington, 1970, p. 48-49.] January 9, 2009.)

"Steam engine rating 48hp from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum." (Source: van der Linde, Claas. March 24, 2019.)

"This launch was 28ft LOA as stated on its construction plan and on the HMCo-made vessel index card and not 26ft LOA as was stated apparently by mistake in the Construction Record." (Source: van der Linde, Claas. December 16, 2021.)

"As per its construction drawing 2-46 this launch was fitted with a gasoline-burning 'Ofeldt Boiler 24in x 36in high' instead of a conventional boiler. Patent No. 716,467, granted on December 23, 1902 to E. G. Ofeldt shows this to be a vertical center drum with vertical coils around its circumference. (Other Ofeldt boiler patents are No. 707,519 granted August 19, 1902 to A.W. Ofeldt which also shows a vertical drum but with two sets of coils around its circumference and Patent No. 653,360 granted July 10, 1900 to G. Ofeld which shows a horizontal drum with interlocking coils beneath it.) " (Source: van der Linde, Claas. December 9, 2022.)

"N/A"

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