Eye Witness No 74: Scientists of the Sea: Various shipboard shots of scientists and technicians paying off large number of lines from small winch, letting it go into water. Shot of "Pacific Naval Laboratory" sign, PAN to rest of building. BOATING SHOT of government research ship "HMCS Cedarwood" passing close across bow and along starboard side where scientist guides lines down into water. BOATING CUs of water, TILT UP to horizon. MLS and CU of sonde being lowered into water. Various BOATING SHOTs of laboratory ship.