Wiebe's hand-written notes from MOCNESS ship log book regarding tapes, etc.                                                         
8/8/03 NJC


Ship speed ~2 knots for all tows
Both ¼" and 9-track tape-recorded most tows.
Mesh opening of nets = 333 microns

AT85  Oct. 1974

M1	NW of Bermuda, ring center to 800m, day.  Oct 15, 1974.  
465 meter wire out=192 m depth: 59degree net angle. 
1056 mwo=450 m: 45 deg.
1300 mwo=565 m: 46 deg.
1504 mwo=673 m: 45 deg.
1798 mwo=795.1m: 46 deg.
Nets 1,2,3,4 di not trigger net bar indicator.  Down at 30 m/min; up at 30 m/min.  Calibration factor 
1 flowmeter count = 4.5m.  Stopped and started at 425m to change ¼" tape.  Not all net bars 
release as they should have. Rather, it appears that for every 3 NR commands only 1 bar 
dropped except perhaps the last command caused the toggle to step 20 deg. instead of 10 deg.or 
it only took 2 steps to release the net.  It appears that the 1st net (net 0) fished down to 800m and 
then back up to 600m (commands 800, 700, 600).  The 2nd net (net 1) fished from 600m to 300m 
and the 3rd net (net 2) from 300m to 100m and 4th (net 3) from 100-0m.

M2	Outside ring (east) to 700m, night.  Oct 17, 1974.  Increased mwo rate from 30 to 
50m/min at 100 mwo.  No net bar indicator working so pressed net command 3 times for each 
depth.  Bad tow – net command did not work – motor drive not plugged in.  Simple oblique tow of 
net 0 from 0-700m and back to surface.  We reset net system and fixed a broken net bar indicator 
for a second attempt. Subsurface current problem below 400m.  Wire angle dropped to ~11 deg. 
We think we were running 1.5 knots against a surface current of  ~1kt and that current only 
extended down to ~400m.  Therefore were not moving forward below that depth.

M3	Outside ring (east) to 400m, night.  Oct 18, 1974.  Down at 30m/min.  Net 1 opened at 
surface (net 0 closed for test).  Net 1 sent down to 400m and closed.  ?Net 2 (400-300m), ?N3 
(300-250m), N4 (250-200m), N5 (200-150m), N6 (150-100m), N7 (100-50m), N8 (50-0m).  There 
is some question as to whether or not net 2 actually stayed open for any length of time as I 
pushed the net command button 5 times to release.  I think net 2 fished only for a minute at most 
and net 3 was actually open from 400-250.  The rest of the series should have gone normally.   
Net indicator did not work properly, probably because magnetic reed switch not fully activated by 
net bars dropping down.  We plan to move magnet tomorrow to correct the problem.

M4	Outside ring to 600m, day.  Oct 18, 1974.  Temp. and conductivity good.  We seem to 
have same differential current problem with depth as we had yesterday.  Up at 30m/min, down at 
~50 m/min. 
 600m depth=1185 mwo.  Wire tension 700-800 lbs. at 459 depth.  
435m = 1000mwo ~1.5 kts.  
384m = 900 mwo, tension ~800. lbs.
329m = 800 mwo, tension = 900 lbs.
281m = 700 mwo, tension = 900 lbs.
260m = 500 mwo, tension = 700 lbs.
230m = 400 mwo, tension = ~700 lbs.
113m = 200 mwo, tension = 800 lbs.

M5	In ring to 800m, day.  Oct 19, 1974.  Good temp. and salinity plot.  Rough seas but we 
think it will be ok.  Down at 30m/min, up at same.  
65m = 150 mwo, tension = 600 lbs. Speed for net 0 1.6 kts.
132m = 280 mwo, tension = 500 lbs.
195m = 430 mwo, tension = 400-500 lbs.  Speed 1.3 kts at 250m
300m = 600 mwo, tension = ~500 lbs.
348m = 700 mwo, tension = 500-700 lbs.
4273m = 900 mwo, tension = 600 lbs.
578m = 1235 mwo, tension = 500-700 lbs. Speed of net at 650m = .9 kts
700m = 1456 mwo, tension = 600-700  lbs.
800m = 1596 mwo, tension = 600 lbs. Coming up.

744m = 1500 mwo, tension = 1100-1300 lbs.  Slow to 15m/min at 1404 hrs.  Net coming up too 
fast.
649m = 1400 mwo, tension = 1000 lbs.
606m = 1300 mwo, tension = 1050 lbs.
592m = 1200 mwo, tension = 1000 lbs.
475m = 1000 mwo, tension = 800-1200 lbs.
438m = 900 mwo, tension = 1300 lbs.
295m = 700 mwo, tension = 1000 lbs.  Changed tape reels at 1445 hrs.
200m = 500 mwo, tension = 1200 lbs.  Ship's speed = 1.5-2 kts
154m = 400 mwo, tension = 900 lbs.
123m = 300 mwo, tension = 1000 lbs.
68m = 200 mwo, tension = 1100 lbs.

M6	Slope Water to 800m, day.  Oct. 21, 1974.  Had trouble with wire ni chive – two stops: 
one at 63m for (1057-1115) 18 mins. And one at 125 m for (1118-1127) 9 mins.   Down and up at 
30m/min until ~360m and then changed to 15m/min., back to 30m/min on net 6. [details as in M5 
located in blue cloth binder in Wiebe lab: 9 Mar. 2004]

M7	Slope Water to 800m, night.  Oct. 22, 1974.  Rough night but fairly good launch.  Wire 
tension gauge broke. Net bar indicator pretriggered once during launch. [details as in M5 located 
in blue cloth binder in Wiebe lab: 9 Mar. 2004]


M8	Slope Water to 350m, day.  Oct. 22, 1974.  This tow was an oblique tow (0-1000m) for 
net 1 and a horizontal tow at 1000m for nets 2-8.
Down:
54m depth = 115 meters wire out (mwo)
91m = 200 mwo
132m = 300 mwo
170m = 400 mwo, 500 lbs. increasing wire out speed form 30m/min to 50m/min
[net] speed at 204m = 1.37 kts
220m = 500 mwo, 500 lbs.
260m = 600 mwo, 400 lbs., speed at 295m = 1.36 kts
315m = 750 mwo, 500 lbs.
335m = 800 mwo, 500 lbs., speed at 346m = 1.34 kts
349m = 875 mwo, 800-900 lbs., speed 1.8 kts
350m = 890 mwo, 500 lbs. = 1.9 kts
349m = 903 mwo, 700 lbs.
350m = 931 mwo, 800 lbs.
352m = 947 mwo, 800 lbs. = 2.4 kts
353m = 956 mwo, 800 lbs. = 2.1 kts
350m = 976 mwo, 800 lbs. = 2.1 kts
353.5m = 983 mwo, 800 lbs. = 2.0 kts
359m at 1029hrs
385m = 1000 mwo, 800 lbs.
Up 30m/min:
350m = 980 mwo, 900 lbs. = 2.4 kts at 1036 hrs., 2.25 kts at 1039 hrs.
348m = 1000 mwo, 600 lbs. = 2.25 kts, 2.3 kts at 1053, 2.25 kts at 1055
350m = 1061 mwo, 1000 lbs.  At 1062 hrs, drop in tensin 650-700 lbs.
All nets closed speed 3.3 kts coming up from 1000mwo.




