it is not for a cutter rig, I know I use to sail one just like that one. it is a goose neck for a self tacking jib boom. the boom attaches to the goose neck. the lower eye is for the sheet block that leads the sheet aft. with the boom pivot aft of the sail tack the further in you pull the boom the tighter the sail is stretched along the foot of the sail for sailing up wind, as you let off on the sheet the sail becomes more curved at the foot and the sail can be used on a reach or a run. it can even be used wing and wing by a single handed sailor. by being mounted aft of the bow pulpit the jib boom will go out on a run without hitting the bow pulpit
"FULL TILT II" 2011 BENETEAU FIRST 30
"FULL TILT" SOVEREL 33
"GOLD RUSH" PRINDLE 16
Last edited by overbored; 11-20-2011 at 12:13 AM.