MKIV Ocean Unit 3
9
Preassembly
Short Top Foil
Top foil length
from worksheet
Actual top foil
Shorten bottom of
bottom foil by this
amount
in
mm
in
mm
in
mm
UNIT 3
5 1/2
140
5 3/4
146
1/2
13
5
127
5 3/4
146
3/4
19
4
1
/
2
114
5 3/4
146
1 1/4
32
4
100
5 3/4
146
1 3/4
44
3
1
/
2
89
5 3/4
146
2 1/4
57
3
76
5 3/4
146
2 3/4
70
2
1
/
2
64
5 3/4
146
3
1
/
4
83
2
51
5 3/4
146
3
3
/
4
95
1
1
/
2
38
5 3/4
146
4
1
/
4
118
UNIT 3
Top foil length from worksheet:
7
7
/
8
" - 6
5
/
8
" (200 - 168 mm)
No change necessary.
UNIT 3
Top foil length from worksheet:
6
1
/
2
" – 5
5
/
8
" (165 – 143 mm)
Cut top trim cap to 4 1/2" (114 mm) as shown above.
Unit 3
Top foil length from worksheet:
5
1
/
2
" -
1
1
/
2
"
(140 - 38 mm)
Actual Top Foil
6
1
/
2
" (165 mm)
Do not cut top foil
to length from worksheet. Cut top
foil to 6
1
/
2
" (165 mm) and shorten trim cap
by 1
3
/
8
" (35 mm) as shown at left. Shorten bottom foil
per chart below. Foil will be clamped in
upper holes
.
7 7/8"
(200 mm)
Cut 1 3/8" (35 mm)
off top trim cap
Cut-off Do not use.
6 1/2"
(165 mm)
UNIT 3
Top foil length from worksheet:
1" -
1
/
2
" (25 – 13 mm)
Do not use short top foil.
Use full length foil and
clamp foil higher in drum assembly.
Use one of the following special techniques for foils under 7 7/8" (200 mm) to ensure sufficient bearing surface for
foil in area of halyard swivel.
In this method only the upper holes
are used thus there is limited up/
down foil adjustment.
Cut-Offs
Do Not Use
Upper holes
