salvage boat

... 盐份计 salinometer 救难船 salvage boat 砂垫,砂墩 sand block ...

 salvage vessel

... 救难船 salvage boat 救难船 salvage vessel 救难工作 salvage work ...

 rescue boat

... rescue boat recovery arrangement 救助艇回收装置 rescue boat 救难船 rescue boat 救援船 ...