1.1本指南涵盖了监测天气条件，以实现更安全的parasail操作。 1.2本指南详细介绍了配备天气监测设备并在船上保存天气日志的parasail操作员。 1.3 单位- 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 3.1每个商用parasail操作员应具有硬安装或手持视觉天气监测设备。仅VHF是不可接受的。 3.2每位船长应按照第节中的程序保存天气日志 4. . 3.3 风力条件: 3.3.1当作业区域内当前观察到的风况包括持续风速超过20 mph、阵风比持续风速大15 mph、阵风期间的风速超过25 mph或雨或大雾导致能见度降低小于0时，禁止商业用伞。 5英里，或当已知雷电风暴在伞帆区域7英里以内时。 3.3.2夏威夷群岛地区:由于海上信风的一致性，该地区的运营商只能在海上风条件下以5 mph的持续风速运行。陆上风况保持不变，符合 3.3.1 . 因此，在持续的海上风速高达25 mph的情况下，可能会发生商业性伞式飞行。 3.4 海况- 据了解，海况可能会导致副帆拖缆的额外负载。 3.4.1湖泊、海岸间区域和河流中的操作员不得在海况或波高超过3英尺的情况下作业。 在这些情况下，应注意特定水体，因为这些位置通常是保护区。因此，如果风速超过中所述的20 mph阈值，则可能会产生满足或超过3 ft波浪或斩波的波高或水面条件 3.3 . 3.4.2海上作业人员不得在超过4英尺波高的海况下作业，除非波高和周期符合以下计算:每1英尺波高3秒周期（例如，4英尺=12秒，5英尺=15秒等）。在运行的任何时候，也应考虑风速和有效载荷。 飞行区内风浪状况的最佳证据应由船长确定，可能与气象服务报告不同。 3.5在任何情况下，不得在超过制造商规定的所用设备限制的天气条件下进行伞帆作业。

1.1 This guide covers monitoring weather conditions for safer parasail operation. 1.2 This guide details parasail operators having weather-monitoring devices and keeping a weather log on board their vessels. 1.3 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 3.1 Every commercial parasail operator shall have a hard mount or handheld visual weather monitoring device. VHF alone is not acceptable. 3.2 Each vessel Master shall maintain a weather log in accordance with the procedures in Section 4 . 3.3 Wind Conditions: 3.3.1 Commercial parasailing is prohibited when the current observed wind conditions in the area of operation include a sustained wind speed of more than 20 mph, wind gusts of a difference of 15 mph greater than the sustained wind speed, the wind speed during gusts exceed 25 mph or rain or heavy fog results in reduced visibility of less than 0.5 mile, or when a known lightning storm comes within 7 miles of the parasailing area. 3.3.2 Hawaiian Islands region: due to the consistent nature of the offshore trade winds, operators in this region may operate under a 5 mph allowance to the sustained wind speed for offshore wind conditions only. Onshore wind conditions remain the same in accordance with 3.3.1 . Therefore, commercial parasailing may occur in sustained offshore wind speeds up to 25 mph. 3.4 Sea Conditions— It is understood that sea conditions can cause additional loading of the parasail tow line. 3.4.1 Operators in lakes, intercoastal areas, and rivers shall not operate in sea conditions or a wave height that exceed 3 ft. Attention should be given to the specific body of water in these cases as these locations are typically protected areas. Therefore a wave height or water surface condition that meets or exceeds 3-ft waves or chop may be produced by wind that exceeds the 20 mph threshold described in 3.3 . 3.4.2 Operators in offshore areas shall not operate in sea conditions that exceed a wave height of 4 ft, unless wave height and period are in accordance with the following calculation: 3 s of period for every 1 ft of wave height (for example, 4 ft = 12 s, 5 ft = 15 s, etc.). Wind speed and payload shall also be taken into consideration at all times of operation. The best evidence of wind and wave conditions within the flying area shall be determined by the vessel Master and may differ from a weather service report. 3.5 In no case shall parasail operations be conducted in weather conditions that exceed the manufacturer's specified limitations of the equipment being used.