Herreshoff #193007es Tern

"[Item Transcription:] Penciled midship section with displacement calculations titled 'For Weekend Aux. Cruiser [#193007es TERN], 28ft 3in, w.l., 34ft o.a., & 9 1/2, 3ft draft
Largest section at nearly 6/10 of wl'. On verso of New York Yacht Club circular dated 12 July, 1930." (Source: MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Section. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. No date (after 1930-07-12).)
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"[Item Description:] Paper scrap inscribed '8/30[?]/30 Sidney Herreshoff'. Found in folder with material for #193007es TERN (Aux. Weekend Cruiser)." (Source: MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Paper Scrap. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-08.)
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"[Item Description:] Penciled sketch of a midship construction section titled 'For Weekend Cruiser [#193007es TERN] 30ft w.l. 37ft o.a. 10ft [beam], 3ft draft. Aug[ust] 1930. Proposed for Griswold [Herreshoff]. Model made but not built from'. With scantlings and weight estimates." (Source: Herreshoff, N.G. (creator). Penciled Sketch. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE02_04400. Folder [no #]. 1930-08.)
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"[Item Transcription:] [Handwritten letter with 'Herreshoff, 111, Highland Avenue, Highland Park, Michigan' letterhead:] Just a line to tell you that we arrived on schedule without even a puncture; and to tell you, and thank you for the fine time we had in Bristol.
On the way back I was thinking of the raised deck you suggested for the cruiser [#193007es TERN (Aux. Weekend Cruiser)] and came to the conclusion that it would be better to raise the sides up to the house line way back to the cockpit. It would seem to me that it would make a better, lighter and cheaper boat. The only problem would be to tie the heavy by the cockpit to the top of the sides but the clamps could be continued 3 ft. into the cabin on the length of the galley [P. 2] and toilet room. It would make a much roomier boat inside, and I believe would have no greater wind resistance on account of the unbroken surfaces. If the part above the usual shear were varnished mahogany I believe it would make a better looking boat. The bow now has 48in freeboard and the house is about a foot high so I suppose the bow would come up about 8in or 9in. A fairly long sweep at the end of the house would tend to prevent an un-broken water flow when rail under. Would suggest fixed port lights in side so nobody could leave them opened or not screwed tight, with a large companion hatch at least 3ft long, to get head room at the galley. A heavy deck beam could be used at forward side of hatch.
If you think well of this suggestion [p. 3] will you please tell Sid[ney Herreshoff], Neestrum [sic, i.e. Charles Nystrom], and Tom Brightman as I want to keep them all interested.
Please thank Ann for both Henrietta and myself and tell her we appreciate all she does.
Your affectionate son, ... [With profile sketch of raised-deck centerboard cruiser with round port holes.]" (Source: Herreshoff, Alexander Griswold. Letter to N.G. Herreshoff. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-08-27.)
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"[Item Transcription:] [Typed letter marked 'Copy' with 'Herreshoff Manufacturing Company, Bristol, Rhode Island' letterhead:] Referring to mine of yesterday. I have been to the shop and showed your letter and enclosed sketch to Sidney and Tom Brightman, which they highly approved. [Charles] Nystrom was away.
I questioned Tom about authority for building the boat [#193007es TERN (Aux. Weekend Cruiser)] and he said Mr. Haffenreffer said, 'So soon as plans were approved by you, Sid and me, to go ahead and get her out this fall'.
I didnot have the "GEE WHIZ's' [#1002s] plans by me in making this sketch and it covers quite satisfactorily what I consider a good cruiser should be and to cover your desires as well as I understand them, and for shallow water use, as in L. St. Clair on the South.
To carry out the conditions required and not feel cramped, I have taken a little more size than 'GEE WHIZ'. The w. l. length is 30ft, and extreme nearly 37ft and extreme breadth of planking 10ft, Draft 3ft. With the intention that the boat be hauled out Winters, and also that she will be several times duplicated, I would by all means, have lead casting include middle section of keel --- the C. b.logs and lugs for floor timbers --- so there would be no seam to shrink open below the cabin floor. You will see I have carried the raised side way to the quarter and the back rest of cockpit side seats are against the clamps, so getting a much wider cockpit. The cockpit floor to be about 9in above L. w. l. The quarter deck on which the helmsman would sit to be about 6in higher, than seats so he can look over his guests heads. Steering gear to be 'CONSUELO [#400s] type' --- that was also used on CLARA [#402s]- ALICE [#405s] and several catyawls of the old days and proved most satisfactory. The motor to be as already approved. I would advise having two openings and slides to cabin as shown, as it is often desirable to have one over galley for ventilation, and also for quick passage from cockpit. There will be, however, walking space aft of centerboard, as well as forward. Will be 3 1/2ft space for galley, with refrigerator and oilskin hanger apposite. Then settee berths 6 1/2ft with toilet room 4ft next forward to port and liberal hanging space to Starboard. To be a builtin berth, port and aft, in forecastle with a swing berth, Starboard and well forward. A high water tank over head to port of mast and probably a large reserve tank under settee Starboard side.
[p. 2] I should have rectangular windows to open, as shown on each side, fitted with removable screens. They will be quite water tight against storms and there is little danger of getting much water thru in a knock-down, if closed. To be a hatch over forecastle, a skylight over cabin, with one corner (1/4) over toilet room.
The head-room, as laid out to be 5ft 6in but could be more if topsides were made higher. Have just seen Mr. Nustrom [sic, i.e. Charles Nystrom] and he proposed having a copy of sketch made, so if you approve, please wire, so work on Model and plans can be started at once.
Your affectionate father, ... [Compare with HH.5.12760 (155-000) Day Sailing Boat] (1930-09-03).]" (Source: Herreshoff, N.G. Letter to Herreshoff, Alexander Griswold. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-09-02.)
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"[Item Description:] [Western Union Telegram from Detroit Michigan to Bristol Rhode Island:] Enthusiastically approve sketch [for what will become #193007es TERN (Aux. Weekend Cruiser)] if not to expensive --- is thirty five feet practicable with ten feet beam --- can crown of deck be increased to improve head room --- plans should show yawl and sloop rig --- suggest oval windows with sliding glass --- approve construction of simple berth design." (Source: Herreshoff, Alexander Griswold. Telegram to N.G. Herreshoff. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-09-05.)
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"[Item Transcription:] Paper scrap inscribed '9/5/30
Mr Norwood Calverx
Ashland National Bank
Ashland, Ky] A man who was interested in a cruiser similar to Griswold's [#193007es TERN (Aux. Weekend Cruiser)]'." (Source: Brightman, Thomas (?) (creator). Estimates Correspondence. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-09-05.)
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"[Item Transcription:] [Handwritten letter with 'Herreshoff, 111, Highland Avenue, Highland Park, Michigan' letterhead:] Your two letters [about what will come to be #193007es TERN (Aux. Weekend Cruiser)] received and read many times. The Chrysler Corp. does not like the idea of my taking on the extra job of sales representative for yachts; and to tell the truth I don't blame them very much as divided interests do not produce results.
So that is all off and I will write Mr. Haffenreffer soon. However I am trying to find out what will be the most acceptable type of boat for Detroit. This an engineering problem not a sales problem.
The following suggestions are made with the idea; not of improving the boat which I don't believe I could do; but with the idea of making a more saleabe[sic] article.
Cost is one of the most important factors and therefore the hull should be kept as [p. 2] simple and inexpensive as possible still preserving a boat which will require no appologies[sic]. Beginning at the stern, I think the quarter deck idea is wonderful with its 6 1/2ft by 4ft space enclosed by a one foot rail, it should make the most popular place on the boat. Would the rail be strong enough for the mooring eyes and runner with sloop rig?
I believe the buying public expect a wheel or a tiller on a boat. I am getting blue-prints and prices on the Ford steering gear made by the Gemmer Mfg. Co. and will send them to you. This gear is entirely enclosed and grease tight so should give no trouble from rusting. it is semi-irreversible so that under normal conditions the helmsman could leave the wheel at any time, there is practically no backlash, it has a 1 1/8in dia, heat treated steel trunion shaft so should be strong enough. I believe it can be furnished in small quantities with a very short steering tube for much less than the special bronze gears can be cut.
The cockpit should be very roomy [p. 3] and comfortable. It might be a good arrangement to place the gasoline tanks above the water-tight floor so that over-filling would rain over board through the cockpit drains.
I have been thinking of many different cabin arrangements. At first I though[t] that a fixed forward berth would give a better appearance than th swinging pipe type then arrived at the arrangement shown in sketch which would give the appearance of more room as the room would be 16ft by 9ft and should require less partitions and be less expensive to build One sliding batch on the opposite side from the galley would give more galley room and by placing the stove next to the bulkhead sufficient ventilation. The intention is to hang a curtain along the centerline of the boat so that either side would have access to the toilet room. The forward hatch could be left slightly open for ventilation even [p. 4] in the rain as a little drip would not mater in there. This arrangement should afford excellent ventilation, plenty of hanging space, and give the appearance of a much larger boat. The design of the skylight and side windows will probably be largely governed by cost considerations. The large rubbing rail should make a very dry boat.
Believe this type of boat should be sold with the least possible amount of equipment than a long list of all kinds of extras listed so that owner could pick out what he wanted getting many equipment next year if necessary. Everybody I have shown the sketch to says that is just the kind of a boat I want.
We are well and busy. The motor boat race here was very interesting, as the U.S. boats had engines with about twice the displacement of the British boats with smaller and better hulls.
Your affectionate son ... [With full-page deck arrangement sketch.]" (Source: Herreshoff, Alexander Griswold. Letter to N.G. Herreshoff. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-09-09.)
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"[Item Transcription:] [Typed letter with 'Dodge Brothers Corporation, Division Of Chrysler Corporation, Detroit, U.S.A.' letterhead:] We have sent two sets of blueprints to you from the Gemmer Manufacturing Company, showing the steering gear they manufacture for various power boats, which is an adaptation of Ford steering, gear.
It was my thought that the steering gear could be mounted [in what will become #193007es TERN (Aux. Weekend Cruiser)] as shown in sketch below. If you think this gear is suitable, you might have Sid [Herreshoff] fill in the desired dimensions and have Tom [Brightman] get definite prices.
Yours sincerely,
A. G. Herreshoff, Chief Engineer, Dodge Brothers Corporation. Commercial Car Division." (Source: Herreshoff, Alexander Griswold. Letter to N.G. Herreshoff. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-09-11.)
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"[Item Transcription:] [Handwritten letter with 'Herreshoff, 111, Highland Avenue, Highland Park, Michigan' letterhead:] I was very much disgusted on getting Tom [Brightman]s estimated selling price of $16,000 [for what will become #193007es TERN (Aux. Weekend Cruiser)]; and was of the opinion that the boat should be dropped. However, on thinking it over, I believe that the high price is mostly due to a difference of point of view; the same point of view that has forced the manufacture of machine tools and automobiles out of New England into the Middle West.
This is how my thoughts on the subject run: It is of the utmost importance to get young people of moderate incomes to buy a Bristol boat so that when they get older and have more money they will go back there for bigger and more expensive boats. There never was any trouble in holding customers. Most people who are earning a living are so situated that they cannot get to their boat easily so it resolves into a week-end pleasure and a cruiser, not a day boat. The most sensible [np 2] boat, then, is one which can be get up with a minimum of work, can be handled by two or one at a pinch, and can sleep two comfortably or four uncomfortably. As a matter of fact four cannot be very comfortable in the limited pace of a small boat. The outstanding virtues to be obtained in a Bristol boat are due to design and experienced workmanship or in other words a fast, easily handled boat with a staunch hull, a boat to be appreciated out in the middle of the Sound in light wind or storm not one to look at on a show floor.
Just as good, or perhaps better, interior woodwork can be obtained from many other places, as a price of $6000 or $7000 is all that can be hoped for in any quantities. I believed it would be worthwhile to see if such a boat cannot be developed to sell for such a price.
If you feel like helping us out on such a plan I believe you will find it very interesting. You know we say out here that anybody can design a good automobile but the difficulty is to design and build a good automobile for a low price. [p 3] The enclosed sketch (roughly to scale) is intended to show such a boat. 32ft to 33ft overall, 26ft w.l., 10ft beam and 3ft draft. Only the essentials are included. The specifications somewhat as follows: Single planking (no sheathing as inside of planking is covered by seat backs except in hanging space or toilet and 1/8in or so can be added to planking thickness to make up for strength).
Open cockpit with slat seats. Engine box not watertight. Two hatches to reduce cost (stern hatch wide to provide ventilation for galley).
Partitions are very simple and might be made of Masonite (a compressed wood we use on truck bodies), no doors, but a curtain for toilet floor way, a curtain at each side at the center partition to be pulled to center on rods to divide sleeping quarters, and a curtain around hanging space.
Bunks to be made of springy cross slats with center bar to prevent too much deflection, no springs. Sails and rigging to be as simple as possible, about 500 sqft, jib and mainsail only,
3] all other sails to be sold as extra equipment. Deck fittings, bow chocks, two mooring cleats forward, two ring eyes aft, of brass, all other cleats to be wood, brass runner slides but wood cleats for tails. One winch for main halyards, wood cleat for jib halyards, sheets and main sheet.
Equipment to consist only of one anchor and line, toilet, wash basin, stove, sink, refrigerator, cushions and curtains, folding cabin table. Two mooring lines, lights and other government equipment, bilge pump and bucket. Extra equipment to include spinnaker, balloon jib and boom, linen, blankets, dishes, pots and pans, extra anchor, anchor chain, sail cover, feathering propeller, steering gear and wheel, cockpit cushions, cockpit awning, yawl rig, chrome plated fittings, trysail, storm jib, special paint or bright finish, cockpit canvas cover, screens for all hatches and lights, larger engine, etc.
We have received the reports of the first two races and it seems like a on sides contest.
Your affectionate son ... [With profile sketch of a raised-deck auxiliary cruiser with oval portlights on Reo Motor Company advertisement.]" (Source: Herreshoff, Alexander Griswold. Letter to N.G. Herreshoff. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-09-15.)
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"[Item Transcription:] [Carbon copy of a typed letter:] My brother Mr. S. De W. Herreshoff, of the Herreshoff Manufacturing Company, Bristol, R. I., has written you in regards to a 15 H.P» 4 cylinder Falcon motor for use in an auxiliary cruiser [ #193007es TERN (Aux. Weekend Cruiser)] they are developing. There was also a question of developing a 10deg bevel reduction gear, as there may be some difficulty in producing gears of this type. If you will be kind enough to send any blueprints you may have of such gears to me, I will see what can be done with the Gleason Manufacturing Company in cutting such gears.
I would also appreciate an assembly blueprint of this motor, showing design of crank shaft, piston valves, etc., as well as a complete set of specifications, in order to get some idea of the desirability of your motor for such service.
You are perhaps familiar with the fact that Chrysler Corporation, is in the Marine motor business and therefore in a position to judge Marine motor design, prices, etc.
Very truly yours ...
CC - Mr. S. De W. Herreshoff" (Source: Herreshoff, Alexander Griswold (Chief Engineer, Dodge Brothers Corp., Commercial Car Division). Letter to United States Motors Corp. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-09-16.)
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"[Item Transcription:] Paper scrap inscribed '8/19[?]/30
Show Mr Sidney H[erreshoff]
B[rightman]'. Found in folder with material for #193007es TERN (Aux. Weekend Cruiser)." (Source: Brightman, Thomas (creator). Paper Scrap. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-09-19( ?).)
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"[Item Transcription:] [Typed letter with 'Dodge Brothers Corporation, Division Of Chrysler Corporation, Detroit, U.S.A.' letterhead:] Your letters of September 15th and 19th [1930] received and I am returning sketches of Falcon reduction gear [for what will become #193007es TERN (Aux. Weekend Cruiser)].
I do not believe the universal joint running at 15deg would be very satisfactory as the turning speed of the driven shaft would not be constant. We do not like to see more than 3 or 4deg constant angle in automobile work. You might suggest to Sid[ney Herreshoff] the use of a chain so that the center distance of the propeller shaft can be put far enough down to use the parallel shaft.
The Whitney Chain Company in Hartford, makes a roller chain which is coming into use for camshaft drives. I believe a heavy roller chain, operating in the oil-type aluminum case, would be quiet and very satisfactory. This arrangement has the advantage that you could probably buy chain and sprockets from the chain people and make the simple cast case yourselves.
I have been wondering if you sent any articles for the Detroit newspapers, however I have not seen any article which mentioned where the ENTERPRISE was built.
I have heard a rumor that the Grosse Pointe Yacht Club is considering building a class of 8 meter boats but owing to the international rule, boat is not the proper kind to have on the lakes. I will see if we cannot get them to design a class for the conditions around here.
Sincerely yours ... [With penciled annotated sketch of Falcom reduction gear.]" (Source: Herreshoff, Alexander Griswold. Letter to Brightman, Thomas (Herreshoff Manufacturing Co.). MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-09-23.)
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"[Item Description:] Penciled pantograph hull sections titled 'Sections at even no. frame spaces, from model of Detroit Week-end Aux. Cruiser [#193007es TERN]. Frame spaces 12in. Scale 1/12 size. N.G.H. Oct 7, 1930.'" (Source: Herreshoff, N.G. (creator). Pantograph Hull Sections. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-10.)
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"[Item Transcription:] Penciled pantograph hull sections and displacement calculations titled 'Week End [#193007es TERN]
1st Trial'. On stationery with gothic font 'Herreshoff Manufacturing Company, Bristol, R.I.' letterhead." (Source: Herreshoff, N.G. (creator). Pantograph Hull Sections. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. No date (1930-10 ??).)
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"[Item Description:] Penciled calculations to derive the scantlings for what appears to be #193007es TERN using the fundamental factors and formulas as set forth by NGH's Rules for Wooden Yachts." (Source: Herreshoff, N.G. (?) (creator). Scantlings. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. No date (1930-10 ??).)
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"[Item Description:] Penciled pantograph lead sections and displacement calculations for what appears to be the ballast keel for #193007es TERN." (Source: Herreshoff, N.G. (?) (creator). Pantograph Lead Sections. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. No date (1930-10 ??).)
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"[Item Description:] Three sheets of penciled 'Proposed Specifications of Standardized One Man[?] Cruiser [#193007es TERN (Aux. Weekend Cruiser)]. Model GEE WHIZ [#1002s] 33ft-6in O.A., 27ft W.L., 9ft-2in B, 3ft-1in D'. " (Source: Herreshoff, N.G. (?) (creator). Specifications. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. No date (1930-10 ??).)
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"[Item Transcription:] Penciled pantograph hull sections and displacement calculations titled 'Week-end Aux. Cruiser [#193007es TERN] 28.2 w.l.
Scale 1in per ft. Oct 4, 1930'." (Source: Herreshoff, N.G. (creator). Pantograph Hull Sections. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-10-04.)
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"[Item Description:] Penciled table titled 'Estimate of Weights for Week-End Aux. Cruiser [#193007es TERN'." (Source: Herreshoff, N.G. (?) (creator). Weight Estimate. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-12-15.)
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"[Item Transcription:] [Carbon copy of a typed letter:] Thanks for yours of yesterday returning the print. I neglected to tell you in my previous letter that of course Sidney had said that a fifteen degree Universal Joint will not do [in what will become #193007es TERN (Aux. Weekend Cruiser)]. He said be much preferred to scheme some way so that no Universal Joint would be required, because he does not like them for continuous full power operation, and they are pretty apt to be dirty and leak oil. If it is in any way possible to get along without either Universal joint or chain I should much prefer to do so, and I am inclined to think that we can eventually get around using either one. I have mo doubts about the practicability of the chain enclosed in an oil casing, and it would have the advantage of allowing us to experiment with various engine-propeller ratios.
I don't believe that Jeff Davis, reporter for the Providence Journal and a good friend of ours, sent anything to the Detroit paper. The last time I saw him he said he had heard nothing from them on the subject and therefore assumed that they were not interested.
General Luke Callan here in Bristol had a high potentate of the Lions or some other organization here several days ago, whom he introduced to us as the Commodore of the Grosse Pointe Yacht Club at Detroit. His name is Marsh, and Mr. Haffenreffer showed him all over the Yard and showed him one of the Fishers Island Thirty-One Footers just planked up but not turned over. Commodore Marsh was kind enough to say that if any of us ever came to Detroit he would be very glad to introduce us at the Club, and Mr. Haffenreffer told him of you and said that he would ask you to call on him some day. The Commodore laughingly proclaimed that he was Commodore of the Rocking Chair fleet, and as he appears to be about sixty years old and not of the type to climb around on a small boat, I imagine he would not personally be interested in small boats. However, it might interest you to call on him some day after he gets back.
We have ENTERPRISE [#1146s], WEETAMOE [#1147s] and YANKEE here, and also the SHAMROCK which we are fitting with her short rig to go back to England. Everybody stayed until after the races and now everybody wants to get hauled out and stored away at the same time and it is rather a jam.
With best wishes, I am
Sincerely yours ..." (Source: Brightman, Thomas (Herreshoff Manufacturing Co.). Letter to Herreshoff, Alexander Griswold. MIT Museum, Hart Nautical Collections, Haffenreffer-Herreshoff Collection Item HH.6.091. Box HAFH.6.2B, Folder Weekend Auxiliary Cruiser. 1930-26-23.)
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"[Item Description:] Penciled sketch titled 'Sketch of proposed Gunter yard mid-section for Griswold's week-end cruiser [#193007es]. Winter of 1936'. Showing a stream-lined wooden spar with integrated track for a luff rope and a doubled-up sail with what appear to be 3 luff ropes behind the mast in order to improve streamlining. On verso of some undated and unidentified letter which also carries a little sketch that appears to be similar to NGH's ca. 1936 front-steering catamaran iceboat." (Source: Herreshoff, N.G. (creator). Sketch. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MR_47330. Drawings (Model Room), Folder 113 [?], formerly 113 [?]. Winter of 1936.)
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Note: This list of archival documents contains in an unedited form any and all which mention #193007es Tern even if just in a cursory way. Permission to digitize, transcribe and display is gratefully acknowledged.

"Designed by NGH for his son Griswold in August 1930 as a variation of #1002s Gee Whiz. Not built by HMCo. But note that a photo labeled by NGH '1937. 'Amaryllis' at the Grosse Point Yacht Club, and the 'Tern', designed by myself. 33' o.a., 10' b., 3' d.' shows a boat that is not believed to be from this design." (Source: van der Linde, Claas. May 2, 2016.)

"Date of design estimated from NGH diary entry of August 31, 1930 where design is mentioned for the first time. Note, that this boat was not built at HMCo." (Source: van der Linde, Claas. May 2, 2016.)

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