Junk deck is a sail design with battens running the full length of the sail, making it easy to install and cheaper than other modern sails. It is ideal for blue water sailing and running with the wind, but not well-suited for close runs or reaching.
Junk deck refers to a sail design in which battens, strips of material such as wood and fiberglass, run the full length of the sail from side to side. It is also called Sampan candle or Chinese candle candle. These designs have several advantages over other modern sails, including ease of installation and use and a cheaper price. Almost any modern browsing platform can be turned into a junk platform. It is especially useful when sailing in the open sea, an activity known as blue water sailing.
Although the junk platform may look complex, the structure is quite simple and closely resembles the initial design that originated in ancient China. Among its recognizable features are the battens that extend from the luff, the leading edge of the sail, to the leech, the trailing edge of the sail. Horizontal sailcloth panels are contained between the battens. At the head, or top, of the platform is the patio, and the arm is located at the bottom. Patio and boom are similar to slats, but have a thicker, stronger composition that allows them to support the full weight of the deck.
The mast, the vertical post that supports the platform configuration, is located near the leading edge of the platform, its luff. Control lines are attached to the trailing edge of the platform, or leech. Unlike other modern rigs, a control line connects to each cleat. If a tear forms in one sailcloth panel, the battens prevent the damage from spreading to the other panels, allowing them to function normally.
The junk rig is ideal for sailing, especially in the open sea. The rig requires little to no adjustment by the sailor and can be aligned accordingly. Its ability to sail with the wind, called running, is the biggest advantage of the junk rig. The platform’s large surface area gathers the wind and propels the boat at speeds only achievable with a few other platforms.
The design is not as well suited for a close run, where the boat tries to travel as close to the wind as possible. The combination of the sail surface, flatness and low elasticity prevent the deck from reaching the speed and power of other boats. This disadvantage also becomes apparent when it comes to sailing perpendicular to the wind, called reaching. However, these problems are mostly associated with low wind environments and can be rectified.
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