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HXH-12 号锣
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HXH-12 号锣 适用范围 船舶 认可标准 1972年国际海上避碰规则及其修正案附录Ⅲ 技术参数 钟口直径:400/460/600mm 声压级:≥110dB HXH-12 Gong The Scope Of Application Applied to ships Approval Standard Annex I of The International Regulations for Preventing Collision at Sea(COLREG)1972 andits Amendments Technical Parameter Diameter of The Mouth:400/460/600mm Sound Pressure Level:≥110dB
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