(click map to enlarge)
Station positions, distances, steaming times
between stations, and work time on station based on leaving Charleston, SC and coming into port at the end of the cruise at
San Juan, Puerto Rico. Work time was computed assuming a nominal depth
at each station of 4,500 m. The MOC-10 (towed on 0. 68" diameter cable,
with 45 - 55o wire angle, net speed of 1.5 - 2.5 kts) will require a
cable payout of 1.4 to 1.6 times water depth or 6300 to 7200 MWO. Deployment
will require 2 - 3 hours at 50 m/min. A 10 - 15 m/min haul-in rate from 4500 m
to 1000 m and 30 m/min for last 1000 m will require 4 - 6 hrs. While sampling,
the MOC-10 will filter 500 - 800 m3/min or a total of 120,000 -
300,000 m3 for the stratified nets. The total MOC-10 haul length time
would take 6 - 10 hr. A typical 0 to 1000 m 1-m2 MOCNESS tow will
take about 3.5 hours and total volume filtered would be 4,000 to 7,000 m3.
A similarly deployed ¼ m2 MOCNESS with fine mesh netting will take
the same time. If at a station, two of each tows were conducted this would take
about 28 hours. Blue water dives would take 4 hr each; 2 will total 8 hr. Total
station time would be ~36 hours. Thus, total steaming time (including to and
from port) + station time = 19 days. Allowance for bad weather (2 day) brings
the total ship time needed to ~ 21 days.
Location |
Latitude (N) |
Longitude (W) |
Distance (nm) |
steaming time (days) |
Time on station (days) |
|
32.78 |
-79.93 |
|
|
|
1 |
35
.0 |
-70.0 |
512.3 |
2.13 |
1.5 |
2 |
30.0 |
-65.0 |
392.5 |
1.64 |
1.5 |
3 |
25.0 |
-60.0 |
401.0 |
1.67 |
1.5 |
4 |
20.0 |
-55.0 |
408.4 |
1.70 |
1.5 |
5 |
10.0 |
-50.0 |
360.00 |
1.50 |
1.5 |
|
18.47
|
-66.11 |
693.70 |
2..89 |
|
|
Total |
|
|
11.53 |
7.5 |