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C. Mast

      English       Metric
  Max Min   Max Min
  1. Dimensions:
    1.   192 186   4876.8 4724.4 Length overall (including hardware):
    2.   4 ---   101.6 --- The maximum foreand aft dimensions, excluding hardware:
    3.   --- 3-1/2   --- 88.9 The minimum fore and aft dimensions, measured from full section above boom jaw area to a point located 127-1/2'' (3238.5 mm) above the mast base:
    4.   --- 2   --- 50.8 The minimum fore and aft dimensions, measured above a point located 127-1/2'' (3238.5 mm) above the mast base:
    5.   2-1/2 ---   63.5 --- The maximum side to side dimension, excluding hardware:
    6.   --- 2   --- 50.8 The minimum side to side dimension, below a point located 127-1/2'' (3238.5 mm) above the mast base:
    7.   --- 1-1/8   --- 28.6 The minimum side to side dimension, measured above a point located 127-1/2'' (3238.5 mm) above the mast base:
    8.   --- 3/8   --- 9.5 The minimum depth of the boltrope tunnel from the outside trailing edge:
  2. Materials: Aluminum; wood; carbon or glass fiber; adhesives; foam; fairing and finishing materials.
  3. Other Specifications:
    1. Only one boltrope tunnel is permitted. The bolt rope tunnel shall be substantially straight with the mast relaxed. Track is prohibited.
    2. Cross section profiles are optional. Mast may be solid or hollow.
    3. A halyard must be installed. An internal halyard is permitted.
    4. Devices which prevent or hinder movement of the boom on the mast are prohibited.
    5. The bottom of the mast must be fitted with a socket that will pivot freely on the mast step deck ball.
    6. The mast, without stays but complete with hardware and halyard used while sailing, may weigh no less than 15 lbs. (6.80 kg). Aluminum masts produced from a die existing prior to July 1, 1996 may weigh less than 15 lbs. (6.80 kg).
    7. When supported at one point in an approximate horizontal position, the mast, without stays but complete with hardware and halyard in sailing position, must balance at a point a minimum of 84 inches (2133.6 mm) from the mast base.
    8. A removable internal reinforcement of allowable materials is allowed. This reinforcement may not be altered, turned or removed during a regatta.

See General Interpretations, Boom Interpretations and Mast Interpretations at end of the Specifications.