Model No. 22: Shadow, Magistrate et al.

Model by: NGH
Made when: August 1914
Stated model scale: 1/18
Model length (ca.): 32.8" (83.3cm)
Implied vessel LOA at 1/18 (ca.): 49' 2" (15.0m)
Power/Sail: P
Vessel Type: Power Yacht (4); Aux. Yawl (1)
Model location: H.M.M. Model Room East Wall

Vessels from this model:
5 built, modeled by NGH

Original text on model:
"1915-16 #300 SHADOW Scale Lengths (1/24 divided by 3/4) equals 1/18 breadth and depth 1/24 divided by 4/5 equals 5/96 (Sidney equals 5/8" scale) raised forward deck
#301 1915-16 Ditto scale lengths 1/24 divided by 15/16 breadth and depth 1/24 ?? per model
375 1919-20 PETUNIA and TIFFANY scale Lengths 1/24 divided by 14 1/4 over 16 breadth and depth ditto 1/24 divided by 4/5 equals 5/96 raised forward deck
#378 NG HELIANTHUS III 1/24 divided by 15/16 breadth and depth 1/24 divided 4/5 equals 5/96 equals 5/8 raised deck full length shear and deck line from drawing" (Source: Original handwritten annotation on model. Undated.)

Model description:
"#300 Shadow, 48'10" loa power cruiser of 1915, but with modifications from model. Also, with modifications, #301 Magistrate, 63'3" loa power tender of 1916, #375 Petunia, 58'1" loa power cruiser of 1920, #378 Helianthus III, 62'7" power cruiser of 1921." (Source: Bray, Maynard. 2004.)
"Shadow's half model and offsets (both by NGH) were for a more-or-less 65-footer but when first used (for Shadow) the lengths were scaled down to 4/5ths of those shown in the book, resulting in Shadow being a bit under 50 feet in length. (Half breadths and scantlings were also scaled down, but by another factor.)" (Source: Bray, Maynard. Email to Claas van der Linde. May 5, 2021.)

Model discussion:
"[Note in offset booklet:] Measurements of model intended for power boat just under 65' overall made in August 1914 by NGH.
Scale of model 1/24th.
Frame spaces 16".
Sheer heights are to under side of deck. Deck 1 3/8".
Deduct for planking 1 3/8"
Deduct for timbers 2 1/8"." (Source: Herreshoff, N.G. [Note in ink in Offset Booklet HH.4.045.2.] Undated, ca. November 1915. Haffenreffer-Herreshoff Collection, MIT Museum, Cambridge, MA.)

Comment:
"#370p Tyara (1919) was added by CvdL to the list of vessels built from this model, both, because she was listed in offset booklet together with other vessels built from that model and because the index in the 2004 Guide to the Collection lists Tyara as having been built from this model." (Source: van der Linde, Claas. 2008.)

"Petunia was built for H. L. Tiffany, there was no yacht Tiffany." (Source: van der Linde, Claas. 2008.)