Sails - Mainsail, mizzen and jib, Dacron. Both the mainsail and jib are fully battened. PocketShips are single-masted sloops set with a gaff-rigged mainsail and a roller-furled jib. A large overlapping jib or genoa is often larger than the mainsail. The Hobie 16 normally carries two sails, the mainsail and the jib. Upwind, it has a mainsail and 100% jib. They have three (or fewer) sails&colon; the mainsail, jib, and spinnaker. It races with the "class jib," a non-overlapping jib, a mainsail, and a large spinnaker. A genoa is larger, with the leech going past the mast and overlapping the mainsail. Current models come equipped with both a mainsail and a jib. The most common use of sail battens is in the roach of a mainsail. A mainsail ("mains'l") is a sail rigged on the main mast of a sailing vessel. Increased mast bend tends to reduce the draft (camber) of the mainsail. The huge mainsail and its boom overhang the hull's transom by four feet. Sometimes cutters also had an additional square-rigged mainsail when traveling downwind.