Unverified50% confidenceDecision RuleTime unknown
A类AIS为SOLAS强制船舶配备标准,发射功率12.5W、报告频率2-10秒;B类为自愿配备,功率仅2W(CSTDMA)或5W(SOTDMA),报告间隔5-30秒。300总吨以上国际航行货船必须装A类,游艇渔船装B类即可
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