Sh. Gavin A. Walker
Dr. C. Prakash Babu
Sh. Milind Naik
Sh. Miliketan Kerkar
Sh. Shynu. R
Sh. Shawn Dias
Sh. C. Jawahar Fernando
Sh. V. S. Prasad
Sh. P. Devandran
Sh. Satish Patel
Sh. Anand Sharma
Sh. P. P. Gosair
Sh. Shiekh Allauddin
Sh. K. C. Prashant
Sh. V. Vignesh Kumar
Sh. R. Prabhakar
ITINERARY OF THE VESSEL:
Departure from Ratnagiri Port
Arrival in (Field) area
Survey (Field)
Arrival at COP Jetty Panaji
OBJECTIVE OF THE CRUISE:
SEDIMENT SAMPLING OFF GOA
(WEST COAST OF INDIA)
Chief Scientist
TO ‘C’
JTA
JTA
PA III
PA III
Master
Chief Officer
Chief Engineer
Electrical Officer
Oiler
Oiler
S/M
S/M
Cook
G.S.
04.02.2008 @ 13:45 hrs
06.02.2008 @ 17:00 hrs
06.02.2008 to 11.02.2008
11.02.2008 @ 14:30 hrs
PROJECT NO:
2

EQUIPMENT USED DURING THE CRUISE:
Mechanical Instrument
1
2
Electromechanical Winch
Single arm davits
Status
Worked Fine
Starboard davit malfunctioned, repaired onboard, but needs urgent attention at port call.
Electronic Instrument Status & recommendations
1. Echo Sounder
2. CTD
3. DGPS
4. AWS
5. UPS
6. Computers
Worked fine
Not used
Worked fine
Worked fine
Worked fine
Worked fine
3

Data Collection:
Sediment sampling was to be carried out in the Bombay High area where earlier shallow water Multibeam surveys was carried out. This was to be done to supplement the Multibeam bathymetry data.
However due to very rough sea conditions with wind speeds of 20 – 28 knots and wave heights of 2 – 2.5m, it was not possible to carry out any operations in the area.
An alternate plan was provided by the Project Leader GAP-1438 through RT and 26 sampling stations were completed off Goa in depths ranging from 190m to 20m.
The sediment samples were retrieved in three blocks from off Goa within a depth range between 20-180 m by using Peterson grab sampler.
In Area A (depth 156-189 m) the sediments are mainly light olive gray (5Y 5/4) in color with sand and carbonate material as main component. Large size well preserved gastropods shells were noticed at several stations. At one station the percent of sand exceeds more than 90%. With increase in fine size clay the abundance of shell material is relatively low at three stations.
In Area B (depth 62-80 m) even though the carbonate material dominates along with sand the shells were mostly broken and lithified into large chunks. The carbonate material dominates compared to sand. Based on visual observations in area A and B it is observed that even though carbonate, the main component, loose in the former and lithified and compact in the latter. It is clearly evident that the carbonate was deposited during lowered sea-level in the last glacial period.
Fine to very fine clay dominates in Area C (depth 19-52 m). Since these are stations are located off Chapora and Mandovi river mouths it is expected that the clay material is delivered by these rivers to the inner shelf. The clay off Mandovi river is very fine clay compared to Chapora river sediments. In these inner shelf sediments
H
2
S smell is observed within 2-3 cm of sediment surface in off Chapora sediments.
The sediments are very light olive gray (5Y 5/2)in color emphasizing the presence of organic matter. At few stations a thin oxidized surficial layers related to early diagenetic process is noticed. At one station one mm thick black sediment is observed at the core top indicating intense organic matter decomposition.
4

General Observations and Recommendations
1. A weather receiver should be installed on board for daily weather broadcasts that will vital for fore warning and necessary action can be taken.
2. Diesel smell in and around the lab is discomforting, an early solution will be helpful as it induces nausea.
3. Two & half hours was spent to rectify the port side davit on high seas before collecting the first sediment sample. The cruise schedule, plan of work and list of equipments going to be used should be planned well in advance. The personnel operating the instrument should check the working condition of the instruments before sailing to save precious time.
Necessary time should be given between cruises to carry out regular & necessary maintenance work.
4. Safety of the personnel both from scientific as well as crew is completely compromised. No safety shoe, gloves, helmets and belts were provided to anyone. Due to limited working place occurrence of accidents is high.
Wearing safety material should be compulsory for all deck operations.
5. Communication equipment like Walkie-Talkie sets is essential onboard as a constant contact is required between bridge and the personnel during operations on deck.
6. Maneuvering of the vessel was found to be hampered by the hydraulic operation of the rudder as it was not going to the full rudder angle ie.30 deg. The rudder was able to turn 15-20 deg on Port & Starboard.
Necessary time has to be allotted for the rectification.
7. Music system does not function and the TV on board badly needs repairs and an antenna. As the only entertainment on board, this should be replaced immediately.
Date: 11.02.2008
Chief-Scientist
Gavin A. Walker
SASU
– 168
5

NATIONAL INSTITUTE OF OCEANOGRAPHY
GOA – INDIA
FORMAT FOR SUBMISSION OF METADATA/INFORMATION FOR UNDERWAY DATA ACQUISITION DURING CRUISE
7
8
9
5
6
3
4
SAMPLING
STATION
No.
1
2
10
LATITUDE (N)
DD MM.mmm
15º 38.370’ N
15º 37.652’ N
15º 36.519’ N
15º 35.864’ N
15º 34.985’ N
15º 33.883’ N
15º 34.810’ N
15º 33.584’ N
15º 33.060’ N
15º 32.352’ N
11
12
15º 31.326’ N
15º 30.218’ N
LONGITUDE (E)
DD MM.mmm
72º 42.810’ E
72º 49.933’ E
72º 49.834’ E
72º 49.863’ E
72º 50.432’ E
72º 50.812’ E
72º 51.424’ E
72º 51.937’ E
72º 51.295’ E
72º 51.455’ E
72º 51.200’ E
72º 52.636’ E
DEPTH (m)
171
178
180
165
189
185
168
169
183
182
170
156
REMARKS
Abundant shells and sandy material
-- do --
-- do --
-- do --
-- do --
-- do --
-- do --
Sandy material
Sandy with abundant shells
Clayey sand and abundant shell material
Clayey sand with less shell material
Clayey sand with less shell material

SAMPLING
STATION
No.
13
14
15
16
17
18
19
20
21
LATITUDE (N)
DD MM.mmm
15º 32.926’ N
15º 32.099’ N
15º 32.212’ N
15º 32.141’ N
15º 31.875’ N
15º 32.189’ N
15º 32.118’ N
15º 36.457’ N
15º 36.498’ N
15º 36.554’ N
22
23
24
15º 36.375’ N
15º 28.612’ N
15º 28.455’ N 25
26 15º 28.427’ N
NATIONAL INSTITUTE OF OCEANOGRAPHY
GOA – INDIA
LONGITUDE (E)
DD MM.mmm
72º 52.168’ E
73º 09.026’ E
73º 12.658’ E
73º 14.194’ E
73º 16.184’ E
73º 18.272’ E
73º 19.557’ E
73º 23.774’ E
73º 29.533’ E
73º 34.018’ E
73º 38.434’ E
73º 32.957’ E
73º 37.580’ E
73º 42.024’ E
167
80
71
67
64
31
21
39
29
19
58
62
52
40
DEPTH (m) REMARKS
Sandy material with less shells
Clayey sand with abundant lithified shells
-- do --
Abundant Broken shell material
Sandy material with less broken shells
Abundant Broken shell material
Silty sand with less shell material
Fine clay with H
2
S smell
Fine clay with H
2
S smell
Fine clay with a thin surficial oxidized layer
Fine clay with H
2
S smell
Very fine clay
Very fine clay
Very fine clay
7