Answer: divingbell

AnswerCrossword Clue
DIVINGBELLOne of 63 Across's ideas
DIVINGBELLDevice used in marine salvage
DIVINGBELLUnderwater research vessel
DIVINGBELLUnderwater search vessel
DIVINGBELLRelative of a bathysphere
DIVINGBELLVessel for underwater work
DIVINGBELLAquanaut's chamber