Join Date: Feb 2000
Location: Annapolis, Md
Thanked 235 Times in 186 Posts
Rep Power: 10
contol lines mainsail, lancer 30
More likely than not, the center line is the outhaul and has a tackle in the boom to give you greater machanical advantage and the two outboard lines are clew reef lines for a slab reefing system. The reef lines run from the end of the boom, through the reef cringle and then are typcially tied around the boom at a point aft of the reef cringle in the reefed position.