Herreshoff #192904es [Unbuilt Shallow Draft Swedish Rule Boat]

"[1929-01-28] Mon 28: ... At work on model [Model 1522], a modification of pro[posed?] 30 square M[eter] class for shallow water.
[1929-01-31] Thu 31: ... At home working on model [Model 1522] & writing.
[1929-02-04] Mon 4: ... I work[ed] on models [Model 1522 and Model 1123] all day.
[1929-02-06] Wed 6: ... At work on models [Model 1522 and Model 1123] most of day.
[1929-02-07] Thu 7: At home all day working on models [Model 1522 and Model 1123] & writing." (Source: Herreshoff, Nathanael G. Diary, 1929. Manuscript (excerpts). Diary access courtesy of Halsey C. Herreshoff.)

"Coconut Grove, Fla. N. G. Herreshoff Bristol, R. I. Feb 14, 1929 {1929/02/14} Dear Francis Inplimenting my letter of some days ago, about the 30 sq meter class, and the designs I have been amusing myself with, the shallow draft one, which only partly complies with the Swedish Rules, and what might be considered a 'development design', I think would make a very good boat, and I see no reason why it should not be a good sailer - i.e. be quite fast, for the sail-area, when actual area is the criterion. The design is 32' o.a., 29' 108" at 7 1/8 above w.l., 27' 6 w.l., 6' 9" beam, 6' 3" wide at w.l., 21" draft. The displacement is 4700 lbs (73 1/2cuft = 4.2 cubed), which I have distributed as follows. [Chart]. I have figured out the [symbol] of displacement vertical plane when heeling at 20deg angle and find it to be removed from [symbol] of weight of vessel 13". This multiplied by wgt. [formula] gives 5090 ftlbs righting moment. The sail area multiplied by the distance to [symbol] is above [symbol] of lateral resistance is 323 x 14' = 4530, which is small and indicates the boat should have more sail to bring these moments nearly equal. With 350sqft and heeling lever 14.'5 there would be then [formula]. Not having full data I could not make an accurate survey of the power & resistance elements of your no 37
[p2] but I estimated the wetted surface to be 153sqft, - the righting arm at 20deg angle 11 3/4" and careening arm (c of sail area to C of lateral resistance) 16'. With sail are of 330sqft and displ of 5470 lbs we have (roughly) [formula]. My long water line and shallow draft design would not hold yours in light winds, but as far as figures go she should be the better of the two in strong breezes. The study is interesting at least, and I w'ld like to see such a boat tried out. ... Your affect Father" (Source: Mystic Seaport Museum, L. Francis Herreshoff Collection, Box 17, Folder 5: Letter from N. G. Herreshoff to L. F. Herreshoff.)

"[Item Description:] Penciled sketched sailplan of an unnamed shallow-draft centerboard yawl with short overhangs and wish-boom rig on 'N.G. Herreshoff, Bristol, R.I.' stationery. Untitled. Marked 'Scale 3/16'. With sail moment = 5000ftlbs calculation. Filed with material related tp L. F. Herreshoff's No. 37 PINTAIL Swedish Rule Schaerenkreuzer from November 1928 as well as material related to #192904es Unbuilt Shallow Draft Swedish Rule Boat from February and June/July 1929 and possibly also related to it. Compare also with MRDE15_01610." (Source: Herreshoff, N.G. (creator). Penciled Sketch. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE15_01430. Folder [no #]. No date (1928-11 ??).)
①

"[Item Description:] Penciled sketched sailplan of an unnamed shallow-draft centerboard cat yawl with long overhangs and wish-boom rig on 'N.G. Herreshoff, Bristol, R.I.' stationery. Untitled. Marked 'Scale 3/16'. With sail area calculations arriving at 321sqft (or 244sqft reefed). With sail area moment = 5780ftlbs (3460ftlbs reefed) calculation. Filed with material related L. F. Herreshoff's No. 37 PINTAIL Swedish Rule Schaerenkreuzer from November 1928 as well as material related to #192904es Unbuilt Shallow Draft Swedish Rule Boat from February and June/July 1929 and possibly also related to it." (Source: Herreshoff, N.G. (creator). Penciled Sketch. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE15_01440. Folder [no #]. No date (1928-11 ??).)
①

"[Item Description:] Penciled sketched sailplan on 'N.G. Herreshoff, Bristol, R.I.' stationery titled '30sqM Scharenkreuzer. L. F. Herreshoff's. No. 37 [PINTAIL, 37ft 0in LOA Swedish Rule built by Lawley in 1929]. Scale 3/16. Nov 1928'. With sail area moment = 546ftlbs calculation. Filed with material related to #192904es Unbuilt Shallow Draft Swedish Rule Boat and #192907es Unbuilt Deep Draft Swedish Rule Boat from February and June/July 1929 and probably also related to its genesis." (Source: Herreshoff, N.G. (creator) and Herreshoff, L. Francis (creator). Penciled Sketch. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE15_01450. Folder [no #]. 1928-11.)
①

"[Item Description:] Three overlaid penciled midship sections with pinpricks of an unidentified boat (ranging from deep draft to shallow draft). Untitlled. With tabulated dimensions marked 'Light draft': 'Overall 32ft 0in. On [unreadable word] 29ft 10in. On w.l. 28ft 3in. Beam 6ft 9in. Breadth w.l. 6ft 5in. Breadth stern 3ft 11in. Breadth keel 13 1/2. Depth hull 2ft 8 1/2in. Draft bottom lead 1ft 10in. Draft bottom rudder 1ft 8in. ... Wetted surface ... total 154[sqft]. Displ[acement] ... 4800[lbs]'. On verso a promotional letter from Stuyvesant Publications to 'Dear Reader' and a penciled note by NGH 'Francis. Ballast 3020[lbs =] 56%. Est[imated] hull & c. 2380[lbs =] 44%. Total 5400[lbs] = 84.4cuft = 4.4^3 = 20% [of] w.l. [suggesting a w.l. of 22ft]'. Untitled, filed with material from around 1929. (This appears to be related to #192904es Unbuilt Shallow Draft Swedish Rule Boat.)" (Source: Herreshoff, N.G. (creator). Pantograph Hull Sections. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE15_01270. Folder [no #]. No date (1929 ?).)
① ②

"[Item Description:] Penciled sketched sailplan of an unnamed yawl with short overhangs and wish-boom rig on verso of envelope with unreadable postmark from L. Francis Herreshoff, 20 Lee Street in Marblehead to NGH in Coconut Grove. Untitled. With calculations arriving at sail areas of 223sqft and 330sqft. Undated. This may be related to #192904es Unbuilt Shallow Draft Swedish Rule Boat from February and June/July 1929. Compare also with MRDE15_01430." (Source: Herreshoff, N.G. (creator). Penciled Sketch. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE15_01610. Folder [no #]. No date (1929-02 ???).)
① ②

"[Item Description:] Penciled preliminary plan with calculations, displacement curve, half-breadth plan and profile titled 'Profile of model [Model 1522] made in Coconut Grove. Feb. 1929 [for #192904es Unbuilt Shallow Draft Swedish Rule Boat]'. Calculations show a displacement of 4760lbs plus 234lbs lead for a total of 4994lbs." (Source: Herreshoff, N.G. (creator). Penciled Preliminary Plan. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE02_04810. Folder [no #]. 1929-02.)
① ② ③

"[Item Description:] Penciled pantograph hull sections with radials titled 'C.G. [Coconut Grove, Florida]. Feb[ruary] 1929. For 30sqm Class'. With calculations for displacment (96.5cuft = 6180lbs), righting moment, and wetted surface (168sqft + 10sq for 1/2 centerboard = 178sqft). (Note: Mention of a centerboard indicates that this relates to #192904es Unbuilt Shallow Draft Swedish Rule Boat which and Model 1123.)" (Source: Herreshoff, N.G. (creator). Pantograph Hull Sections. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE04_03100. Folder [no #]. 1929-02.)
①

"[Item Description:] Penciled pantograph hull sections (full sections) on 'N.G. Herreshoff, Bristol, R.I.' stationery titled 'Model [Model 1522] 32ft oa. 27 1/2ft wl. 6ft 9in beam [#192904es Unbuilt Shallow Draft Swedish Rule Boat]. Scale 3/4. Made Feb[ruary] 1929'. With tabulated weight study arriving at a total weight of 5000lbs. With calculations arriving at a displacement of 73.5.0cuft = 4700lbs and a wetted surface of 158sqft." (Source: Herreshoff, N.G. (creator). Pantograph Hull Sections. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE15_01340. Folder [no #]. 1929-02.)
①

"[Item Description:] Two penciled sailplan sketches of wishboom-rigged shallow-draft centerboard yawls annotated '24ft o.a. 20ft w.l. 7 1/2 beam. Model of Jan[uary] 20, 1928. Scale 1/4in' and '36ft o.a. 26ft lwl. 7ft 4in beam. 6ft 6in [beam at] w.l. 2ft 0in draft. … Scale 1/4in. May 2, 1929', respectively. The former with sail area calculations arriving at 266sqft, the latter at 323, 324, and 325sqft. The latter boat apparently shows #192904es Unbuilt Shallow Draft Swedish Rule Boat. (Compare with MRDE15_01200 and MRDE15_01290.)" (Source: Herreshoff, N.G. (creator). Penciled Sketch. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE02_03720. Folder [no #]. 1929-05-02.)
① ②

"[Item Description:] Two sets of penciled pantograph hull sections (one crossed-out) on 'Herreshoff Manufacturing Company, Bristol, R.I.' stationery titled 'June 26, 1929. Model [Model 1126] for 18ft sqrt(Sail) Class Sail Measurement Rule. Scale 3/4. 25ft 8in w.l.'. The first set of sections marked '1st trial' and with calculations arriving at a displacement of 94.2cuft = 6020lbs. The second set of sections is crossed out, marked 'Not sandpapered' and with calculations arriving at a displacement of 92cuft = 5880lbs. With note 'Estimate of weights. See over'. On verso another set of penciled pantograph hull sections with note 'Re-measurement of C.B. Model [Model 1522] made in Coconut Grove for the 30sqM Class and same as my 18ft sail meas[urement] class' with calculations arriving at a displacement of 94cuft = 6000lbs. Also with tabulated weight study titled 'Estimate of w[ei]g[h]ts for June 26 design on other side' arriving at a total weight of 5880lbs. [This is not #192904es Unbuilt Shallow Draft Swedish Rule Boat or #192907es Unbuilt Deep Draft Swedish Rule Boat but certainly related to them.]" (Source: Herreshoff, N.G. (creator). Pantograph Hull Sections. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE15_01400. Folder [no #]. 1929-06-26.)
① ②

"[Item Description:] Penciled sketched profiles and sections overlaying a deep-draft and a shallow-draft design Untitled, no notes, undated. Filed with material related to #192904es Unbuilt Shallow Draft Swedish Rule Boat and #192907es Unbuilt Deep Draft Swedish Rule Boat from February and June/July 1929 and probably also related to it." (Source: Herreshoff, N.G. (creator). Penciled Sketch. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE15_01420. Folder [no #]. No date (1929-02 or 1929-06/07 ??).)
①

"[Item Description:] Penciled crossed-out pantograph hull sections on verso of 'Herreshoff Manufacturing Company, Bristol, R.I.' stationery titled 'July 7, 1929. Model [Model 1132] for Light-draft 324sqft Sail Rating. Length oa. 32 1/2ft. Rational line 29ft 11 1/2in. W.l. 28ft 0in. Beam 7ft. Breadth w.l. 6ft 5 1/2in. Draft 23in'. With tabulated weight study arriving at a total weight of 5810lbs. With calculations arriving at a displacement of 91.0cuft = 5810lbs and righting moments for jib & mainsail and yawl rig configurations. On verso another set of penciled pantograph hull sections with calculations arriving at a displacement of 91.0cuft = 5820lbs. [This is not #192904es Unbuilt Shallow Draft Swedish Rule Boat but certainly related to it.]" (Source: Herreshoff, N.G. (creator). Pantograph Hull Sections. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Item MRDE15_01380. Folder [no #]. 1929-07-07.)
① ②

"[Item Description:] HMCo Plan HH.5.05601 (076-163) 'Constr[uction] Plan for Contr[act] #1133 [Fano]. ... July 15, 1929'. Blueprint construction plan with plan view, sections and and inboard profile. Untitled. Marked in pencil '1929'. With list of scantlings. With numerous small changes in red pencil which are incorporated into the plan in Hart Nautical Collections, suggesting that this plan was created prior to that in Hart Nautical Collections. On verso penciled profile sketch of an unidentified design with both shallow draft and deep keel underwater configurations [possibly related to #192904es Unbuilt Shallow Draft Swedish Rule Boat?]." (Source: Herreshoff, N.G. (creator). Blueprint. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum Acc. 2004.0001.0129. WRDT08, Folder 11, formerly MRDE02. No date (before 1929-07-15 ?).)
① ② ③ ④

Note: This list of archival documents contains in an unedited form any and all which mention #192904es [Unbuilt Shallow Draft Swedish Rule Boat] even if just in a cursory way. Permission to digitize, transcribe and display is gratefully acknowledged.