EASTERN AREA CRUISE No. 25 
Eastern Grid Survey No. l4 
to 
28 September - 7 October 1967 
Personnel: 
Itinerary: 
Methods: 
Observations-were made from a light tug during this survey. During 
periods of moderate, choppy seas which prevailed through most of the 
survey, observations were taken from the lee wing of the pilot house. 
On 4 October when seas and winds moderated observations were held from 
the flying bridge. No nocturnal observations were taken. 
Bathythermograph casts were made at four hour intervals in the 
grid area. 
Two departures were made from the normallgrid track. On 2 October 
25 miles were cut from the western end of east-west legs 3 and 4. Again 
on 3 October it became necessary to divert south of the normal track of 
east-west by 4 to avoid an area in the Pacific Missile Range where there 
was an apparent firing firing (see Figure ). 
Acknowledgments: 
Fine cooperation was received from Captain Frazier and crew members 
of the boat. A special thanks is extended to R. Cordinier who as a 
volunteer made the trip to serve as aerographer and to make B-T casts. 
Also Capt. Frazier is given special thanks as he participated in nearly 
every B-T cast during the entire trip. 
The B-T winch was furnished by Naval Electronics Laboratory in 
San Diego. A special thanks goes to Mr. George Schaffer of that 
organization who had the winch serviced and delivered to the bo&t. 
Vessel Considerations: 
The light tugs used in the survey worked well, i.e., they completed 
the grid and the work was done. However due to their size and, more 
important, their characteristics at sea, the quantative survey data are 
not believed "good" (accurately indicative of actual numbers)* This 
R. L. DeLong (Biologist-in-charge) 
Richard D. Chandler 
John Fitch 
28 September 1100 
29 September 0440 
6 October O83O 
7 October 0730 
Depart Treasure Island, San Francisco 
Enter Eastern Grid at Ft. Ash 
Depart Eastern Grid at Pt. Oak 
Arrive Long Beach 
