Facnor Lock for Mainsail reefing HRC 9T (with bow shackle)

The HRC locking systems :
– prevent the boom sheaves and reefing lines, subject to high tensions.
– reduce the compression on the boom section due to the high tension of the reefing line
Locking :
– release the Mainsail halyard in position
– tighten the reefing line up to the locking position of the trigger
– release the reefing line and hoist the Mainsail Halyard
Unlocking :
– tighten the trigger line
– hoist the Mainsail