For an OSV not on an international voyage，an approved substitute for an impulse projected type line throwing appliance is a（）.
- Aspring-loaded line thrower
- Bhand thrown buoyant line
- Cshoulder type line throwing gun
- Dheaving line
问题
For an OSV not on an international voy
参考解析：
分类：船舶强度资料题库
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