M-17 Sail Measurement Information
Measurements as supplied by Jerry Montgomery

Standard Rig:
I 22.92 FT.
J 7.16 FT.
P 19.33 FT.
E 7.75 FT.

Tall rig is same except I and P are 1.75' longer.
Working jib as supplied by Montgomery was a 109%.

Flush Deck:
I 25.08 FT.
J 7.16 FT.
P 22.5 FT.
E 7.0 FT.

The following was contributed by Mike Leonard, '83 M-17 #369

A note from Mike:
"I compiled the information on this work sheet in an attempt to establish guidelines for a decision on what size Genoa to purchase as well as to have measurements to provide a sailmaker. The boat measurements were taken by me and are as accurate as I could make them based on our 1983 M-17. The McKibbon, Kern and Stock main measurements were taken by me with the sails spread out on the floor. All other genoa measurements were base on standard LP ratio calculation base on the J measurement of 6' 7" and the maximum furl distance available. (less some room for stretch). The furler measurements are what I used to cut the foil to length and are the actual measurements that I have used on my boat."

Measurements are presented in various equivalent units.
Stock Measurements
Mast Height 258.00 IN. 21.50 FT. 21'-6"
Head stay lgth.** 279.50 IN. 23.29 FT. 23'-3 1/2"
I-measurement 271.00 IN. 22.58 FT. 22'-7"
J-measurement 79.00 IN. 06.58 FT. 6'-7"
P-measurement 232.00 IN. 19.33 FT. 19'-4"
E-measurement 93.00 IN. 07.75 FT. 7'-9"
** center hole to center hole with half turnbuckle
and one inch toggle on top.

Stock Main
Luff 19'
Leech 20'-5"
Foot 7'-6"
Area 71.25 75 sq ft. with leach
Perimeter 47'

Kern's Working Jib 108%
Luff 21'-6"
Leech 19'-6"
Foot 8'
LP 7'-2"

Genoas

Genoa Measurements
L.P. L.P. L.P.
110.00% 86.90 IN. 07.24 FT. 7'-3"
130.00% 102.70 IN. 08.56 FT. 8'-6"
133.00% 105.07 IN. 08.76 FT. 8'-8"
150.00% 118.50 IN. 09.88 FT. 9'-11"
155.00% 122.45 IN. 10.20 FT. 10'-2 1/2"
160.00% 126.40 IN. 10.53 FT. 10'-6"

McKibbon's Genoa 133% Measurements
Luff 21'-10"
Leech 20'-2"
Foot 9'-5 1/2"
LP 8'-8"
Area 98.06 14120.22 Sq. In.
Perimeter 51'-11"

Roller Furler Measurements

Some small boat roller-furlers are not reefable - check with dealers or manufacturers to make sure.

General Roller-Furler Measurements
Furl foil length 265.5" 22'-1 1/2"
Exposed foil length 261.75" 21'-9 3/4"
Max usable furl dist. 262" 21'-10"
Top sheave to shackle 267.5" 22'-3 1/2"
Boat width at jib block 7'-2"

150% Genoa Roller-Furler Measurements
Luff 21'-6"
Leech 20'-5 1/2"(max 21'-min. 20')
Foot 10'-7 1/2"
LP 9'-11" measured at 43" up from tack
Area 110.6 Sq. Ft.
Perimeter 53'
#6 luff tape

155% Genoa Roller-Furler Measurements
Luff 21'-6"
Leech 20'-9 1/4"(max 21'-min. 20')
Foot 10'-8 3/4"
LP Area 114.5 Sq. Ft.
Perimeter 53'-2 1/2"
#6 luff tape

Storm Jib Measurements

John Edwards: "Here are the measurements for my storm jib.It is very short in the foot, long in the luff, and the clew is cut high."
Storm Jib
Luff 20'
Leech 17'-8"
Foot 18 1/2"
LP Area 114.5 Sq. Ft.
Reef Point 37 1/2"