EASTERN AREA CRUISE 33 13 - 22 December 1967 EASTERN GRID SURVEY 19 14-21 December 1967 Prepared by Robert L. DeLong Itinerary: 13 December 1800: Depart Pt. Loma, San Diego, California 14 December 2310: Enter Grid Pt. Ash 21 December 1210: Depart Grid Pt. Oak. 22 December 0900: Arrive Pt. Loma, San Diego Personnel: Robert L. DeLong (BIC), T. James Lewis, and Jeffrey Tordoff. Survey Ship: USS REXBURG, PCER 855 Methods: Diurnal observations were maintained from the forecastle and the open bridge as weather dictated. Bathythermograph casts were made at four hour intervals, but were discontinued for 12 hours on the 17th due to heavy seas. Bucket temperatures were taken until it was found that they agreed exactly with the B-T instrument. However, the sea water injection temperature (recorded on the weather)log never agreed with bucket temperature. The skiff was not put in the water due to heavy seas. The REXBURG carried three rubber fuel cells containing ca.7500 gallons of diesel fuel on her decks. Before the last of these could be emptied the cell broke up emptying more than 2000 gallons of fuel over the decks and into the sea. The PCer class ships are well suited to the survey needs. Conditions: Snow in San Diego on the day of departure heralded conditions through- out the survey. Temperatures averaged below normal the first three days. Winds were high and the seas higher than normal. Only on the last two days of the survey while on the last leg did conditions moderate and seas go down.