tion and secured. Next, equipment and supplies 

 are loaded and the raft is set adrift. The pro- 

 cedure is reversed when the raft is taken aboard. 



While the raft is adrift, it is manned by two 

 biologists who make continuous observations 

 from dawn to dusk. Watch positions are rotated 

 once each hour; one observer is always in the 

 chamber and one on deck. At night they return 

 to the mother ship, which remains 1/2 to 3 miles 

 away. 



EVALUATION 



The Nenue proved to be a seaworthy observa- 

 tion platform during five short drifts of up to 2 

 days off the island of Hawaii in 1962 and during 

 two longer drifts, 8 and 9 days, near the Equator 

 in 1964 (fig. 5). Its major disadvantages lay in 



5'N- 



■FANNING I. 



.■^..CHRISTMAS I. 



^ DRIFT NO.K 8 DAYS) ^ 



150"W 



Figure 5. — (Upper panel) drift area south- 

 west of Hawaii; (lower panel) drift 

 tracks of Nenue in the equatorial 

 Pacific. 



Figure 6. — (A) Whitetip shark, Carcharhinus 

 longimanus , with pilotfish, Naucrates due tor ; 

 (B) dolphin, Coryphaena hippurus ; (C) 12-15 cm. 

 juvenile Coryphaena sp.; (D) wahoo, Acantho- 

 cybium solandri . 



