PART V - SUMMARY OF OPERATIONS (CONT) 2. In connection with the productivity measurements, the light incubator, designed to duplicate light intensities at predetermined depths was discovered cracked and the white cloth wrappings (used to duplicate the above depth-light intensities within the incubator) yellowed so that originally determined intensities would probably be no longer valid. The cloth wrappings were washed and bleached, and the crack repaired, so that although the intended calibration was not duplicated, samples were incubated daily with the hope that a correction factor could be determined and applied prior to data analysis by comparison with duplicate samples run with a good incubator. A second incubator was not received until arrival in Puntarenas, Costa Rica, so that approximately half of the productivity work was done with this suspect incubator. (g) Meteorological Equipment. Texas A&M University provided ROCKAWAY with meteorological equipment including an all-sky camera, pyroheliometer, dew point, wet and dry bulb temperature difference and air temperature recording apparatus. Due to a lack of adequate instruction information and a malfunctioning power supply for the all-sky camera, shipboard personnel were unable to set up the gear. No observations were taken for the first seven days. Upon arrival in Guayaquil, Ecuador, a representative from Texas A&M flew down to make the repairs. He was unable to fix the air temperature recording apparatus, so that apparatus was inoperative during the entire cruise. The pyroheliometer system, once operative, ran well as did the dew point instrument. The all-sky camera's power supply was repaired, however, the camera's operation throughout the cruise is questionable. Although the camera gave external appearance of operating satisfactorily, removal of the film cartridges at several times during the cruise showed internal failures, so that the amount of data collected will not be known until the film is developed. (h) Salinograph-Thermograph. The Salinograph-Thermograph operated without serious malfunction throughout the entire cruise, however the salinity trace read approximately 1 ppt lower than comparative values obtained from surface samples and STD data, so that, before data can be analysed, a correction factor will have to be determined and applied. (i) Expendable BT. 1. The Expendable BT's operation was satisfactory during most of the cruise, however, a total of six casts were aborted because of erratic operation. The cause was eventually traced to a short in the launcher system. (3) Recommendations. (s) In consideration of the age of the STD cable and the usage to which it has been subjected in two EASTROPAC cruises, it is recommended that authorization be granted to cut off at least 2000 meters from the outer end of this cable. This would leave approximately 3000 meters of cable for future operations. It is to be clearly noted that this recommendation is not based on any physical evidence of deterioration or weakness.