Gemini 105Mc Owner’s Manual
7Copyright © 2004 Performance Cruising Inc.
Gemini Quick Start Guide
1/4 turns.
Caution: The boards are designed to only be in the
down position when necessary. Do not leave the
boards in the down position for an extended period as
there is a small tolerance between the board and the
centerboard case. If barnacles and growth build up
on a board left in the down position, it will be diffi-
cult to impossible to raise the board without first
scraping it clean.
Rudders
The Gemini’s rudder system is mechanically joined
through the steering system and will steer the boat in
3’ of water in the down position or 18” of water in
the up position.
To raise the rudder, simply pull the control lines on
the transom. One line pulls the rudder up, while the
other pulls the rudder down.
The sheet stoppers/jammers are used for holding the
rudders in both the up and down positions. When
locked in the down position, it’s important not to lock
the jammers down completely as the rudders are de-
signed to kick-up if run aground. Locking the jam-
mers down completely will prevent the sheet from
coming loose. However, lightly closing the jammers
down will provide enough stopping power to keep the
rudders in the down position as the boat moves for-
ward.
Lower the rudders when leaving the boat—especially
if the boat is kept in deep or choppy water. This re-
lieves the tension on the rudder ‘up’ line.
The engine is connected to the tillers on the top of
the rudders and will steer whatever the depth of the
rudder.
Sails
Sail Square Footage
Genoa 350 sq. ft.
Jib 220 sq. ft.
Main 340 sq. ft.
Screacher 420 sq. ft.
Reefing Recommendations:
As a general rule, reduce sails when heeling at or over
7º and/or according to the following wind strengths:
Sails Wind
Full Main and full genoa Up to 18 knots
Full Main and jib or reefed genoas 22 knots
1st reef in main and jib 26 knots
1st reef in main and storm jib 30 knots
2nd reef in main and storm jib Gale
If using the main alone in winds over 30 knots, a sin-
gle reef will suffice.