HMCo #282p [Launch for St. Y. Corsair III]

"Tuesday, Oct[ober] 2, 1911
#282, Gasoline launch for J.P. Morgan. 35ft o.a. 7ft 4in beam with 45-65hp, 6 cyl. Sterling engine. Propeller 3 blade 22in x 32in pitch; the boat was hauled in the afternoon and the blades were found to be bent back about 2 1/2in due to the reaction on the water, this may have changed the pitch.
Weight without fuel and equipment 5000lbs. ... [np] Speed 19.34 mi[les] per hour." (Source: Herreshoff, N. G. Handwritten note in Experiments Booklet '1911 Trial Trips and Experiments' under date of October 2, 1911. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.)

"... No. 282 [#282p] - 1911. 35ft Motor Launch. 45/65 Sterling. CORSAIR. 3514.72 [Time & Materials] + 33 1/3 [% Shop Overhead] x 44% [Profit Margin] = [$]6748.26. [Time & Mat.:] 3514.72. [Contract Price:] 6750.00 ..." (Source: Herreshoff, N.G. Penciled untitled calculations, apparently made to determine appropriate profit margins for future cost estimates, after the death of his brother J.B. Herreshoff. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. Undated, between 1915 (when #313p, the latest boat on this list, was built) and 1919 (when #367p CORSAIR, the first launch not on this list, was built and a price for her had to be determined).)

"A fast naphtha launch [#279p Premier or possibly #281p Sterling] was launched at high tide today at the Herreshoff boat shops for John B Herreshoff. The launch is designed to travel at the rate of 18 miles an hour. She is equipped with a 90 horse-power Sterling engine, is 40 feet long and 6 feet beam, and is built of cedar and mahogany. A 36-foot launch [#282p Launch for St. Y. Corsair III]] for J. Pierpont Morgan and another [apparently #283p Launch for Aloha II] of the same dimensions and design, for Ex-Commodore James of the New York Yacht Club, are nearly ready to be launched." (Source: Anon. "Launching at Herreshoff." Bristol Phoenix, August 25, 1911, p. 2.)

"BRISTOL, R I. Sept 9 [1911] --- The speed launch ordered by J. Pierpont Morgan for his steam yacht Corsair is nearly ready at the Herreshoff shops. The 90-horse power engine is expected to give her a speed of 18 miles an hour." (Source: Anon. "Bristol Notes." Boston Globe, September 10, 1911, p. 53.)

"... The Herreshoffs have received an order from J. Pierpont Morgan for a speed launch to be carried aboard the Corsair. This launch will carry a 90 horsepower motor capable of making eighteen miles an hour. ..." (Source: Anon. "Ticks From the Ship's Clock." Forest & Stream, October 21, 1911, p. 621.)

"[Item Transcription:] [Penciled calculations, apparently made by NGH to determine appropriate profit margins for future cost estimates, after the death of JBH:]
No. 313 [#313p] - 1915. 26ft Steam Lauch for CAROLA. 2255.93 [Time & Materials] + 33 1/3 [% Shop Overhead] x 50% [Profit Margin] = [$]4511.86. [Time & Mat.:] 2255.93. [Contract Price:] 4500.00
No. 294 [#294p] - 1914. 30ft Steam Lauch, Oil burning for V. Astor. 2423.49 [Time & Materials] + 33 1/3 [% Shop Overhead] x 50% [Profit Margin] = [$]4845.48. [Time & Mat.:] 2423.49. [Contract Price:] 4875.00
No. 274 [#274p] - 1910. 27ft Steam Lauch for Bath Iron Works. 2485.64 [Time & Materials] + 33 1/3 [% Shop Overhead] x 30% [Profit Margin] = [$]4308.45. [Time & Mat.:] 2485.64. [Contract Price:] 4300.00
No. 270 [#270p] - 1909. 27 1/2ft Steam Lauch for H.A.C. Taylor. 2293.59 [Time & Materials] + 33 1/3 [% Shop Overhead] x 40% [Profit Margin] = [$]4271.37. [Time & Mat.:] 2293.59. [Contract Price:] 4250.00
No. 298 [#298p] - 1914. 32ft Motor Launch for WAYFARER. Premier Motor. 3045.99 [Time & Materials] + 33 1/3 [% Shop Overhead] x 30% [Profit Margin] = [$]5257.72. [Time & Mat.:] 3045.99. [Contract Price:] 5250.00
No. 297 [#297p] - 1914. 30ft Motor Launch for WAYFARER. Stirling Motor. 2327.49 [Time & Materials] + 33 1/3 [% Shop Overhead] x 37% [Profit Margin] = [$]4251.54. [Time & Mat.:] 2327.49. [Contract Price:] 4250.00
No. 282 [#282p] - 1911. 35ft Motor Launch. 45/65 Sterling. CORSAIR. 3514.72 [Time & Materials] + 33 1/3 [% Shop Overhead] x 44% [Profit Margin] = [$]6748.26. [Time & Mat.:] 3514.72. [Contract Price:] 6750.00
No. 277 [#277p] - 1911. 30ft Motor Launch ISABEL (for LCL [L.C. Ledyard] by J.B. Webb). 2573.00 [Time & Materials] + 33 1/3 [% Shop Overhead] x 75% [Profit Margin] = [$]5903.67. [Time & Mat.:] 2573.00. [Contract Price:] 6000.00
No. 273 [#273p] - 1910. 30ft Motor Launch for M.F. Plant (Premier). 2576.78 [Time & Materials] + 33 1/3 [% Shop Overhead] x 60% [Profit Margin] = [$]5497.14. [Time & Mat.:] 2576.78. [Contract Price:] 5500.00
No. 278 [#278p] - 1910. 35ft Motor (Ideal) stock boat sold to WESTWARD. 2114.46 [Time & Materials] + 33 1/3 [% Shop Overhead] x 40% [Profit Margin] = [$]3947.00. [Time & Mat.:] 2114.46. [Contract Price:] 4000.00
No. 265 [#265p] - 1908. 34ft Motor (Premier) [for] NORTH STAR. 2259.20 [Time & Materials] + 33 1/3 [% Shop Overhead] x 18% [sic, i.e. 6% Profit Margin] = [$]3199.04. [Time & Mat.:] 2259.20. [Contract Price:] 3200.00
No. 283 [#283p] - 1911. 30ft Motor (Premier) [for] ALOHA A.C. James. 2974.84 [Time & Materials] + 33 1/3 [% Shop Overhead] x 45% [Profit Margin] = [$]5751.35. [Time & Mat.:] 2974.84. [Contract Price:] 5750.00
No. 292 [#292p] - 1912. 40ft Motor (8 cyl Sterling) [for] F.L. Dunne. 4630.47 [Time & Materials] + 33 1/3 [% Shop Overhead] x 55% [sic, i.e. 30% Profit Margin] = [$]8019.64. [Time & Mat.:] 4630.47. [Contract Price:] 8000.00
No. 296 [#296p] - 1914. 30ft Motor Launch (Stillson) Stock HMCo inventoried at 3,500. 2185.60 [Time & Materials] + 33 1/3 [% Shop Overhead] x 20% [Profit Margin] = [$]3496.95. [Time & Mat.:] 2185.60
No. 291 [#291p] - 1912. 50ft Motor Launch (2 Sterlings) Admirals Barge USN. 8141.40 [Time & Materials] + 33 1/3 [% Shop Overhead] x 18% [Profit Margin] = [$]12[8]08.57. [Time & Mat.:] 8141.40. [Contract Price:] 12000.00
No. 295 [#295p] - 1914. 19 1/2ft Motor Launch (Model E Sterling) W.K. Vanderbilt. 1240.68 [Time & Materials] + 33 1/3 [% Shop Overhead] x 22% [Profit Margin] = [$]2018.17. [Time & Mat.:] 1240.68. [Contract Price:] 2000.00
[Time & Materials:] 44757.68 [sic, i.e. 44857.68]. [Contract Price:] 80625.00
[p. 2]
[Unreadable]
Time & Material for 15 boats cost 44,757.68
adding 33 1/3% average for shop 14,919.23
makes shop cost 59,676.91
To equal contract price have to add about 35% = 20886.91733
Total 80,563.82. [Undated, between 1915 (when #313p, the latest boat on this list, was built) and 1919 (when #367p CORSAIR, the first launch not on this list, was built and a price for her had to be determined).]" (Source: Herreshoff, N.G. (?) (creator). Cost Estimate. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDED1_00160. Folder [no #]. No date (between 1915 and 1919 ?).)
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"[Item Transcription:] [Carbon copy of typed letter:] Harry and I greatly enjoyed our visit to you yesterday. It was a great pleasure to be able to express to you in person my sentiments about the 'GAMECOCK' [#932s].
You may remember that you once designed a launch [#282p], I think a thirty-five foot boat for the 'CORSAIR' and subsequently built a duplicate [#367p]. The hull of the original launch has now come to me, and I propose to convert it into a launch to use as a tender for a racing boat, and I should like very much to have you give me your suggestions and possibly a sketch or some plan of arrangement for her. I propose taking out the original engine, which is altogether too powerful and uneconomical of fuel, and putting in a thirty or forty horsepower medium duty motor, which I suppose will drive the boat at about twelve or fourteen miles per hour and still have sufficient power to tow an 'R' boat at a reasonable pace. I should like to put a house on the boat, which will have sufficient room to have a water-closet and possibly two pipe bunks, in case I should want to have a man live on board. The boat is now laid up at Fife's Yard, Glenwood, and I should propose to have the work done there, as there is considerable difficulty attached to taking to Bristol, but I should be very much obliged if you, or the company would furnish me the necessary plans for the work to be done." (Source: Morgan, Junius S. Letter (copy) to N.G. Herreshoff. Herreshoff Marine Museum Collection Acc. 98.85. Correspondence, Folder 30, formerly 179. 1925-08-25.)
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"[Item Description:] #282p CORSAIR conversion, HMCo would like to do the work for you, intend to send my observations on measurement rules and improvement suggestions" (Source: Herreshoff, N.G. Letter to Morgan, Junius S. Herreshoff Marine Museum Collection Acc. 98.87. Correspondence, Folder 30, formerly 179. 1925-09-03.)
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"[Item Transcription:] Thank you very much for your letter of September 3rd, enclosing the sketch for the proposed changes to the old CORSAIR launch [#282p]. I should like very much, if possible, to have the work done at Bristol, and if I can do so will arrange to communicate with either you or Mr. Haffenreffer. The sketch seems to provide what I want, except that I think there should be put in one good towing bitt, somewhere forward of the aft end of the cockpit. This can probably be done fairly easily.
I shall look forward to hearing from you on the subject of the measurement rules and will do my best to see that your suggestions are carefully considered. Many thanks to you for taking this trouble. [Incl. envelope.]" (Source: Morgan, Junius S. Letter to N.G. Herreshoff. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MR_30740. Subject Files, Folder 28, formerly 10-15. 1925-09-08.)
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"[Item Transcription:] I wrote you a day or two ago thanking you for the sketch for alterations to the old CORSAIR [#282p] launch, and I have decided to send the boat to Bristol to have the changes made; and I am writing Mr. Haffenreffer on the subject. I think the sketch is excellent and provides everything needed, hat I would make the following suggestions:-
1. I entirely agree with yon that six cylinders are preferable to four for a smooth running marine engine and, judging from what I have seen of the Packard Engine in George [Nichols]'s boat, I should like to have one of the same make in mine.
2. I think it would be advisable to either make a watertight floor with a drain in the after cockpit, or else provide some means of covering it in bad weather, as I understand the men handling the boat had some difficulty once or twice when George had her, particularly when running in a quartering sea.
3. I suggest electric running lights with permanently fixed side lightsboards on top of the house at the forward end.
4. It might be advisable to have a handrail along the side of the house to provide a grip for anyone who has to pass along outside.
5. I think it would be advisable to provide a good towing bit some where near the after end of the cockpit, either at the forward edge or after edge of the seat there.
I do not know whether you will think it necessary to make the house any higher than you have drawn it, but the need of head room is fairly important, though I do not want to sacrifice all the good looks of the boat to that.
I return your sketch herewith and shall be very glad to have you supervise the work for me if you are willing to do so.
Sincerely yours, ..." (Source: Morgan, Junius S. Letter to N.G. Herreshoff. Herreshoff Marine Museum Collection Acc. 98.88. Correspondence, Folder 30, formerly 179. 1925-09-10.)
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"[Item Transcription:] Dear Mr. Morgan.
Please excuse my negligence in not acknowledging your kind letter of [September] 10th [1925]. I will be glad to advise about changes of launch [#282p CORSAIR] until I leave for the south and I shall in a few days begin the design for an R boat [#932s GAMECOCK] for you.
In relation to certain changes in Racing rules appertaining[?] to Measurements principally which I have to suggest I donot want to be considered as one making unnecessary trouble for the yacht owners or do it for any personal advantage. it is only to correct defects and get the Rules in best possible form, and have them so they will not produjest[?] the most desirable type of yacht.
To my mind such results can only be got at thru experimentation and to that end rules must necessarily be changed from time to time, so that manifest[?] improvements in type of yachts will at least be merited.
The general formula for obtaining rating I donot think can be improved, but I do think it unfortunate that the coefficient .18 had not been made .2 in the first place so the rating would be nearer to L in a normal boat. But a change now would not be desirable as the classification would have to be changed to kick yachts in their respective classes.
The present method of obtaining L I think very faulty and should be improved. The relation of Q.B. length to l.w.l. should not be dictated, but each should be taken at its value to produce the best type of yacht. There is no reason why q.b.l. should bear[?] a relation of 100% - sq-rt(lwl) and it is quite wrong to allow sharper water lines in large yachts than small ones. If a fixed relation between lwl and q.b.l. was desirable it would be better to have it the same in all sizes but it is not desirable.
Seeing the tendency to make the overhangs very flat in order to gain more useful length for racing that is not measured, I propose to take another length measurement in the same plane that Q.B.L. is taken in and then combine it with lwl and qbl to obtain L. I suggest that the plane from which all calculations are made be called 'Established waterline plane' instead of Load waterline plane, and the length taken in this plane be called 'Established waterline' (E.W.L.). The new measurement taken in plane 1/10 of breadth above be called Load waterline (L.w.l.).
Also. Change the name 'Quarter beam length' to 'Quarter breadth length' (Q.B.L.) as the time honored Breadth of Beam is the breadth at height of main beam and not at waterline.
The formula for obtaining L I propose shall be L = (LWL + EWL + 2*QBL) / 4.
In this formula I consider the three length measurements are taken at their relative values for racing and preventing the ends from becoming too flat for comfortable motion in a seaway. After experiments use it is still found bows are made too flat for easy motion in sea, the formula might be changed to L = (LWL + EWL + 3*QBL) / 5.
This of course does away with the formula 'Percentage + 100 - sq-rt(l.w.l.)'.
Limits and Penalties.
Draft of water is not used as a factor in measurement. The only object in having a limitation is for convenience in docking and navigation, both for easy motion at sea and ability to navigate in waters of restricted depth. The present limitation rule is simple, but does not fill the requirements properly. It allows an unnecessary amount of draft in small boats and not enough in yachts of intermediate classes.
As examples the 75 foot w.l. yachts SHAMROCK VANITIE and RESOLUTE [#725s] all had centreboards beside a full allowance of draft. ELENA [#706s] schooner had centreboard beside full allowance of draft.
To improve this limitation I suggest a modification of the rule as follows:-
When L is 16ft or under draft limit .25L
When L is between 16ft & 36 draft limit .22*(L=2.18)
[etc, etc]
In centreboard yachts draft when centreboard is up not to exceed .125L.
Penalty to overdraft to be as now ( 3 times excess added to Rating).
I am opposed to the limit put[?] and[?] displacement in divisor of Rating measurement formula.
I know it was advised and adopted without due amount of trial of the formula as it originally stood. It came about when to[?] P class yacht JOYANT [#709s] had made a very successful season at racing in command of Addison Hanan. Hanan was a very clever helmsman and had been winning out in other boats. After JOYANT's initial season under HANAN she never showed more than average speed but has always been considered a desirable type of yacht, excepting that she had excessive overhang and that might fairly have been attacked instead of displacement. Her cube-rt(D) / lwl = .23. VAGRANT [#719s] and class cube-rt(D) / lwl = .217. QUEEN MAB [ex #698s VAGRANT I] .2185.
FLYING CLOUD [#703s] and HASWELL [#743s] .22.
All I consider the most satisfactory yachts fit for deep sea cruising and at the same time fast enough to give good sport in racing.
Another consideration is Yachts built to Lloyd's Rules are so heavy in hull construction that it is quite necessary to have cube-rt(D) / L more than 20% * lwl + .5 in order to carry sufficient amount of ballast.
I hope to see this limitation expurgated from the rules.
The restriction of position of mainmast in (two-masted) schooners to aft of 53% of water line length has no justification and is a devv[?] strict against improvement[?].
My experience indicates that the best possible position for the mainmast is a little forward of what the rule allows. Can any one give a good reason why the position of the mainmast should be restricted? Often the layout of cabin or of deck beams & framing would ask for a position against the ruling. I think it difficult to make any just ruling for placing the mast and it better be left free for future developments. A tentative ruling might be that the centre of mast be not forward of centre of displacement and when in that position the schooners rating to be 95% of that of a sloop rig. If the mast is farther aft each % of w.l. length shall be deducted from 95% rating. That would make the rating with mast in present restricted position about 92% of sloops rating.
The height limit of jib-headed or leg-o-mutton mainsail I should make universal for for[?] any rig and make the upper point of measurement for any sail (including club topsails) from the deck as follows:
Single masted yachts not over 1.8*sq-rt(S)
Two masted yachts not over 1.5*sq-rt(S)
Triple masted yachts not over 1.4*sq-rt(S)
Having a plus constant in the present rule is quite a mistake, as any one can see. [Undated. Reference to 'letter of 10th' shows this to be a response to Junius Morgan's September 10, 1925 letter to NGH and thus would suggest that NGH wrote this about September 15, 1925.]" (Source: Herreshoff, N.G. Letter to Morgan, Junius S. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MR_31080. Subject Files, Folder 30, formerly 10-15. 1925-09-(ca15 ?).)
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"[Item Transcription:] [Typewritten signed letter on Herreshoff Manufacturing Company, Bristol, Rhode Island' stationery:] I hare been waiting to see the CORSAIR'S launch [#282p] before replying to your valued letter of September 10th [1925]. As it has not yet arrived I want to thank you for that letter.
Mr. Herreshoff has given use the sketch which you returned to him and is giving our Drafting Room people instructions in regard to the changes in the motor installation.
The new Packard Engine, like the one which we put in the launch belonging to Commodore Nichols will cost Fifteen Hundred Dollars, and fitting this in place with the necessary changes to the engine beds, propeller shaft and propeller, oil tank, circulating and exhaust piping, engine cover and Bosch Horn, will amount to about Twelve Hundred Dollars.
It is impossible to state exactly what the changes to the shelter etc., will cost, but we shall be very glad to do this in the most expeditious manner and in accordance with instructions from Mr. Herreshoff and will keep the cost as low as is possible consistent with first class work.
I will see if we can get an offer in trade for the old engine, and if not will find out the best price obtainable for it and will advise you before selling.
Thanking you for sending the launch to Bristol and assuring you that it will have the attention of Mr. Herreshoff.
I am
Very truly yours, " (Source: Haffenreffer Jr., R.F. (Herreshoff Manufacturing Co.). Letter to Morgan, Junius S. Herreshoff Marine Museum Collection Acc. 98.79. Correspondence, Folder 30, formerly 179. 1925-09-17.)
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"[Item Transcription:] [Typewritten signed letter on Herreshoff Manufacturing Company, Bristol, Rhode Island' stationery:] I have your letter of September 24th, relative to the models [of Herreshoff 'S' Class Sail Boats at a three quarter inch scale as per Haffenreffer to Morgan letter dated January 21, 1925] and regret to learn that the one for the Seawanhaka-Corinthian Yacht Club has not been received. Upon looking up the records I find that this was Expressed, in accordance with your letter of January 6th, to Mr. C. Sherman Hoyt, Chairman of Committee on Lines and Models, Seawanhaka-Corinthian Yacht Club, 25 West 35th Street, New York City. This model was sent July 18th, at the same time as the other two, and I trust that it was received and is being held for Mr. Hoyt at the New York address. If you wish I will arrange to have it forwarded to the Club at Oyster Bay.
I am having the bill for the models enclosed herewith.
Mr. Herreshoff has had the CORSAIR'S launch [#282p] put in the south shop with the RESOLUTE [#725s] and is giving the shop detailed instructions as to what to do to her.
I am
Very truly yours, ..." (Source: Haffenreffer Jr., R.F. (Herreshoff Manufacturing Co.). Letter to Morgan, Junius S. Herreshoff Marine Museum Collection Acc. 98.80. Correspondence, Folder 30, formerly 179. 1925-09-28.)
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"[Item Description:] sale of #282p CORSAIR's old Sterling engine" (Source: Brightman, Thomas (Herreshoff Manufacturing Co.). Letter to Morgan, Junius S. Herreshoff Marine Museum Collection Acc. 98.69. Correspondence, Folder 30, formerly 179. 1925-11-16.)
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"[Item Description:] telegram, accept sale of #282p CORSAIR's old Sterling engine" (Source: Morgan, Junius S. Telegram to Herreshoff Manufacturing Co. Herreshoff Marine Museum Collection Acc. 98.70. Correspondence, Folder 30, formerly 179. 1925-11-17.)
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"[Item Description:] sale of #282p CORSAIR's old Sterling engine" (Source: Brightman, Thomas (Herreshoff Manufacturing Co.). Letter to Morgan, Junius S. Herreshoff Marine Museum Collection Acc. 98.71. Correspondence, Folder 30, formerly 179. 1925-11-18.)
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"[Item Description:] thank you for check for work on #282p CORSAIR" (Source: Brightman, Thomas (Herreshoff Manufacturing Co.). Letter to Morgan, Junius S. Herreshoff Marine Museum Collection Acc. 98.72. Correspondence, Folder 30, formerly 179. 1925-11-18.)
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"[Item Transcription:] Handwritten (in ink) trials booklet titled '1911. Trial Trips and Experiments'. Relevant contents:
§6: #282p [LAUNCH FOR ST. Y. CORSAIR III] Trial Run 'Speed 19.34 mi. per hour' (1911-10-02)." (Source: Herreshoff, N.G. (creator) and Herreshoff, A. Sidney deW. (creator). Trials Booklet. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE07_04280. Folder [no #]. 1911-06 to 1926-05.)
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ ⑫ ⑬ ⑭ ⑮ ⑯ ⑰ ⑱ ⑲ ⑳ ㉑ ㉒ ㉓ ㉔ ㉕ ㉖ ㉗ ㉘ ㉙ ㉚ ㉛ ㉜ ㉝ ㉞ ㉟ ㊱ ㊲ ㊳ ㊴ ㊵ ㊶ ㊷ ㊸ ㊹ ㊺ ㊻ ㊼ ㊽ ㊾ ㊿
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Note: This list of archival documents contains in an unedited form any and all which mention #282p [Launch for St. Y. Corsair III] even if just in a cursory way. Permission to digitize, transcribe and display is gratefully acknowledged.

• Corsair (HMCo-made index card)
• Corsair (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: Corsair
Type: Gasoline
Length: 35'
Owner: Morgan, J. Pierpont

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

• Corsair
• Magnet ex-Tender for Corsair III
• 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.

Year: 1911
E/P/S: P
No.: 282
Name: Corsair
OA: 35' 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.

"Gasolene launch for J. P. Morgan's steam yacht Corsair III." (Source: van der Linde, Claas. February 14, 2009.)

"Note that the HMCo name index card for #282p Launch for St. Y. Corsair III incorrectly lists plan 2-66 as the primary plan. It should have been 2-67." (Source: van der Linde, Claas. October 30, 2014.)

"All four launches built by HMCo for various Corsairs (#282p, #367p, #381p, #409p) were owner's launches as indicated by their elaborate curved glass deckhouses which were not fitted to crew launches." (Source: van der Linde, Claas. November 30, 2014.)

"Apparently owned as Magnet by Junius S. Morgan as per index card prepared by L. Francis Herreshoff." (Source: van der Linde, Claas. November 17, 2016.)

"Weight 5000#." (Source: Herreshoff Manufacturing Company. [Penciled Notes.] Corsair Launch Construction Plan 2-67. September 10, 1911.)

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