TOBI Watchkeeping

TOBI watchkeeping was split into three four-hour watches repeating every 12 hours. Watchkeepers kept the TOBI vehicle flying at a height of between 350 to 400m above the seabed by varying wire out and/or ship speed. Ship speed was usually kept between 2.0 and 2.5knts over the ground, depending on wire out, with fine adjustments carried out by using the winch. As well as flying the vehicle and monitoring the instruments watchkeepers also kept track of disk changes and course alterations.

Table 4: TOBI runs.

RUN	START TIME & DATE	END TIME & DATE	COMMENT
0	08.30/190		Launch aborted after open circuit found.
1	21.30/190	02.30/191	Curtailed due to electrical short.
2	14.26/191	22.38/199	End of run1. Noise on record.
3	21.26/202	21.45/202	Curtailed due to open circuit.
4	02.06/203	18.04/208	End of science cruise.

Table 5: TOBI MO logs.

M-O Number	File Name	time start	time end	comment	profiler roll
690	TOBI.DAT	2130/190	0230/191		1
690	TOBIA.DAT	1426/191	0145/192		2
691	TOBI.DAT	0145/192	1755/192		3
692	TOBI.DAT	1755/192	1004/193		4
693	TOBI.DAT	1004/193	0213/194		5
694	TOBI.DAT	0213/194	1822/194		6
695	TOBI.DAT	1822/194	1031/195		7
696	TOBI.DAT	1031/195	0240/196		8
697	TOBI.DAT	0240/196	1849/196		9
698	TOBI.DAT	1849/196	1058/197		10
699	TOBI.DAT	1058/197	0307/198		11
700	TOBI.DAT	0307/198	1916/198		12
701	TOBI.DAT	1916/198	1126/199		13
702	TOBI.DAT	1126/199	2238/199		14
703	TOBI.DAT	2126/202	2145/202		-
703	TOBIA.DAT	0206/203	1758/203	no-data	15
704	TOBI.DAT	1758/203	1007/204		16
705	TOBI.DAT	1007/204	0216/205		17
706	TOBI.DAT	0216/205	1825/205		18
707	TOBI.DAT	1825/205	1034/206		19
708	TOBI.DAT	1034/206	0243/207		20
709	TOBI.DAT	0243/207	1852/207		21
710	TOBI.DAT	1853/207	1102/208		22
711	TOBI.DAT	1102/208	1804/208		23