. Commercial fisheries review. Fisheries; Fish trade. OCEANOGRAPHY 17 Drifting 'Ben Franklin' Will Carry Modern Equipment When the research submarine Ben Franklin begins her Gulf Stream drift mission early in 1969, she will carry the most sophisticated scientific equipment available foroceano- graphic work. She will start at the Florida end of the Gulf Stream and, 4 weeks later, arrive at a point in the Stream off Massachu- Grumman Aircraft Engineering Corp., Ben Franklin's owner and operator, developed the world's largest nonmilitary research sub- marine with the help of Jacques Picca
. Commercial fisheries review. Fisheries; Fish trade. OCEANOGRAPHY 17 Drifting 'Ben Franklin' Will Carry Modern Equipment When the research submarine Ben Franklin begins her Gulf Stream drift mission early in 1969, she will carry the most sophisticated scientific equipment available foroceano- graphic work. She will start at the Florida end of the Gulf Stream and, 4 weeks later, arrive at a point in the Stream off Massachu- Grumman Aircraft Engineering Corp., Ben Franklin's owner and operator, developed the world's largest nonmilitary research sub- marine with the help of Jacques Piccard, an authority on deep-diving vehicles. The Oceanographic Office (NOO) provided most of the sub's scientific equipment. Also, it will send 2 or 3 oceanographers on the mission and provide the surface support ship. The Mission The scientists will drift with the Gulf Stream in the 50-foot, 130-ton sub. Data supplied to them by a current sensor system mounted on the top deck will enable them to measure the sub's relative current speed and diversion. The vehicle has a 36-man-week life-sup- port capability. The scientists will be able to view their surroundings from 2 external camera systems designed to provide stereo photographs of the seafloor--and two 70 mm. cameras integrated into a closed-circuit television system to observe marine life and phenomena. Several bracket-mounted, hand- held, still- and motion-picture cameras will be used to photograph the scientists at work. The scientists will use a narrow-beam, side-scan sonar to see the outline of the sea floor passed over by the sub. A continuous FM sonar system will monitor obstacles that may be encountered. It will observe and monitor the Deep Scattering Layer--horizon- tal, sound-scattering bands of marine life that oftenproduce "false bottoms" on the record- ing traces of echo-sounding devices. Special Equipment The scientists will use a water-sensing pod to measure on magnetic tape continuous digital infor
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