Cruise Plan
Bray Cruise
16 August 1995
R/V Gordon Sproul

Cruise Goals:  The purpose of this cruise is to
check out a new towed ADCP package.  We will first
gain some experience deploying and recovering the
package.  We will then tow in an 8 point star pattern,
approximately 20 minutes/leg, to provide GPS post
processing calibration information.   Finally, we will tow a reciprocal 
course in sharply deepening water to
adjust bottom track parameters.

Dates:  0800, 16 August 1995 - Depart Nimitz
        1700, 16 August 1995 - Arrive Nimitz

Schedule:  0800  Depart Nimitz
           1000  Arrive approx. 32 40.00N 117 20.00W
                 Start star pattern
                 Steam 270 for 20 minutes at 10 knots.
                       180     "
                       90      "
                        0      "
                       270  for 10 minutes
                       225  for 20 minutes
                       135     "
                        45     "
                       315     "
           1300  End star pattern
           1330  Arrive approx. 32 35.30N 117 25.00W
                 Adjacent Coronado Escarpment 
                 Proceed approx. 225 degrees until
                 bottom track lost.  Turn to approx.
                 45 degrees until bottom track re-
                 acquired.  Repeat as time permits.
           1530  Recover tow.  Depart for Nimitz.
           1700  Arrive Nimitz

Equipment, Safety, and Contingencies:  While the
towed instrument is new, it is similar to an 
existing instrument.  CCS personnel have developed
safe methods for deployment and recovery.  All
deck operations will be under the direction of
a deck boss.  All personnel will be required to
work in a safe manner using standardized procedures.

The work is scheduled in the submerged submarine
transit lane Sierra Zeus and involves towing an
instrument submerged at 20 meters.  No submarine
transits are scheduled in the Local Notice to
Mariners, August monthly edition.  Should transits
be announced in the weekly supplement, work
can be moved north of the transit lane off Mission
Bay where bottom topography is also suitable.
The additional transit time may extend the cruise
somewhat.


                                              -Charly Coughran
                                               ccoughran@ucsd.edu