2025 Ronstan Marine Catalogue - Catalog - Page 267
FEATURES & INFORMATION
RONSTAN ORBIT WINCHES™
254
Orbit Winch™ Selection Guide
Choose your Ronstan Orbit Winch™ keeping in
mind the size of your yacht and your sailing
requirements. This selection guide is intended
for masthead rigged monohull yachts of medium
displacement. Refer to the notes to the right
regarding other rig or displacement types.
Please note that this table lists typical winch sizing
for the given applications, but can not take into
account all variables due to the wide variety of
sailing vessels and conditions.
Heavy Displacement
For boats with heavy displacement and/or a high
righting moment, it is advisable to choose a winch
larger than those indicated in the table.
For further details see our website at
www.ronstan.com or consult your local Ronstan
representative for assistance in selecting your
winches and information on features, options and
installation.
Multihulls
Catamarans and trimarans have higher righting
moments than monohulls of the same size, and
should use winches larger than those indicated in
the table.
Masthead Rigged
Use the Length Overall (LOA) figures as your
primary selection criteria.
Fractional Rigged
Refer primarily to the sail area, rather than LOA.
For electric winches, the size selection is generally
similar to that of a manually operated winch.
LOA (Feet)
25-28
29-32
33-35
36-39
40-43
44-48
49-54
LOA (Metres)
7.6-8.5
8.8-9.8
10.1-10.7
11.0-11.9
12.2-13.1
13.4-14.6
14.9-16.5
Genoa Sail Area (ft2/m2)
300/28
350/33
470/44
560/52
770/72
880/82
1300/120
Spinnaker Sail Area (ft2/m2)
410/38
600/56
800/74
1200/111
1600/150
2000/185
2800/260
150/14
210/20
260/24
320/30
430/40
470/46
750/70
2
2
Main Sail Area (ft /m )
Application
Recommended Winch Size
Genoa Sheet
20
30/40
40
45/50
50
Spinnaker Sheet
20
20
20/30
30/40
40/45
45/50
Main Sheet
20
20
20/30
30
30/40
45/50
50
Genoa Halyard
20
20
20/30
30/40
40/45
45/50
50
Spinnaker Halyard
20
20
20/30
30
40/45
45
50
Main Halyard
20
20
20/30
30/40
40
40/45
45/50
Reef Line
20
20
20
20
20/30
40
40/45
