"Rosita" Research Log - Leg 1

Ship Bar

Species (Sp) Key:
CODO - Common Dolphin (Delphinus delphis)
STDO - Striped Dolphin (Stenella coeruleoalba)
WSDO - Atlantic White Sided Dolphin (Lagenorhynchus acutus)
BLWH - Blue Whale (Balaenoptera musculus)
PIWH - Pilot Whale (Globicephala melaena)
SPWH - Sperm Whale (Physeter macrocephalus or Physeter catadon)
UNDO - Unidentified Dolphin
UNSW - Unidentified Whale

Table 1: The sightings and observations made by the "Rosita" crew on Leg 1 of their journey.
Date On/off effort V-vis; A-acstc Time (UTC) Lat (N) Long (W) Depth (m) Temp (F) Sea State Clouds (%) Vis. (mi) Hdg (mag) Obsvrs Sp. # Dist and brg Comments
5/3/00 Off 2155 4203.9 6940.1
44.2 4



WSDO 25-35

5/5/00 Off 1330 4116 6426
46 3



CODO 5

5/5/00 Off 1430 4117 6407
47 4



UNSW 1 1.5 mi Breach, ~20ft anmal
5/7/00 Off 1400 2549 4109.3
60 6



UNDO 200

5/9/00 Off 1134 4059.8 5132
56 5



SPWH 2
Surfaced next to boat
5/10/00 Off 600 4117.4 4855.9
56 2



UNDO 3

5/11/00 Off 1724 4148.7 4533.3
65 4



BLWH 1 300 m Saw terminal dive, small dorsal fin on large back.
5/12/00 Off 1845 4319.2 4221.6
63 4



CODO 15

5/13/00 Off 500 4346.5 4057.9
57 5



UNDO


5/13/00 Off 1000 4359.4 4016.6
57 3



UNDO 5

5/13/00 Off 1200 4408.3 3958.3
59 5



UNDO 1

5/13/00 Off 1814 4431.2 3904.8
58 3



STDO 50

5/13/00 Off 2100 4439.9 3837.7
57 3



CODO 1

5/14/00 Off 1400 4530.3 3616.5
57 3



CODO


5/14/00 Off 1600 4536.5 3559.2
57 3



CODO 10

5/15/00 Off 1600 4652.2 3242.2
55 4



PIWH 75-100
W/ mixed dolphin group. W/ boat on and off all day
5/15/00 Off 1600 4652.2 3242.2
55 4



CODO

W/ pilot whales
5/15/00 Off 1600 4652.2 3242.2
55 4



STDO

W/ pilot whales
5/16/00 Off 605 4731.1 3039.5
58 6



PIWH 100
W/ boat until 0800
5/16/00 Off 1400 4745.6 2915.9
58 5



STDO 300
Porpoising fast
5/17/00 Strt-V,A 1820 4909.8 2427.8
56 6 100 >5 90 MJM
LAC



~40 mi frm Comm. Morris Grds. Under sail 9 kts
5/17/00 On-V,A 1850 4910.3 2421.9
56 6 100 >5 90 MJM
LAC



2sperm whales clicking. Winds 25 NW
5/17/00 On-V,A 1920 4911.1 2415.1
56 6 100 >5 90 MJM
LAC




5/17/00 End 1954 4912.8 2404.3
56 6 100 >5 90 MJM
LAC



Hove to for dinner
5/18/00 Strt-V,A 621 4917.1 2315.4
55 4 100 >5 52 PKH
MJM



1 visual, 1 acoustic observer
5/18/00 On-V,A 704 4920.4 2310.6
55 4 100 >5 50 PKH
MJM



Hdg diagonally across Comm. Morris grd
5/18/00 On-V,A 730 4923.5 2306.4
55 4 100 >5 50 PKH
MJM




5/18/00 On-V,A 802 4924.9 2304.7
55 4 100 >5 50 PKH
MJM



Faint ship-as it grows louder, Pc stop clicking
5/18/00 On-V,A 832 4927 2301.9
55 4 100 >5 50 PKH
MJM




5/18/00 On-V,A 913 4930.5 2256.1
55 4 100 >5 50 PKH
MJM



2 visual, 1 acoustic observer
5/18/00 On-V,A 1000 4934.5 2254.2
55 4 100 >5 50 ARK
EP



ship still heard - radar shows it at 11 miles
5/18/00 On-V,A 1040 4937.9 2251.4
55 4 100 >5 20 ARK
EP



chgd course to avoid ship at 4 mi
5/18/00 On-V,A 1100 4938.6 2251.2
55 4 100 >5 50 ARK
EP



ship passed w/n 1.5 mi. no noticable sound change w/passing
5/18/00 On-V,A 1134 4941.5 2246.9
55 4 100 >5 50 ARK
EP




5/18/00 On-V,A 1154 4943.2 2244.8
55 4 95 >5 50 ARK
EP



ship at 9 mi- just beginning to hear dolphins again. Obscured or silenced? Ship noise very faint.
5/18/00 On-V,A 1206 4949.2 2243.5
55 4 95 >5 50 ARK
EP



ship no longer audible at 10.7 mi. Heard at greater distance when approaching
5/18/00 On-V,A 1245 4947.4 2240.1
55 4 90 >5 51 ARK
EP



Ship starting up? Not seen on radar at 24 mi. At 1308, no longer audible
5/18/00 On-V,A 1330 4950.7 2236.4
55 4 60 >5 51 ARK
EP



Distant dolphins heard
5/18/00 On-V,A 1400 4953.2 2233.2
55 4 35 >5 51 LAC
PKH
MJM



1354- ship sound heard but became inaudible
5/18/00 On-V,A 1430 4955.6 2230.8
55 4 35 >5 51 LAC
PKH
MJM




5/18/00 On-V,A 1500 4957.9 2228.6
55 4 35 >5 51 LAC
PKH
MJM




5/18/00 On-V,A 1530 5000.2 2226.1
55 3 50 >5 51 LAC
MJM



Nuffink
5/18/00 On-V,A 1600 5002.9 2224.1
54 4 75 >5 51 LAC
MJM



Sperm whales heard, distant dolphin whistles
5/18/00 On-V,A 1630 5006.4 2221.6
55 4 75 >5 51 LAC
MJM



Loud sperm whales
5/18/00 End 1720 5010.4 2217.1
55 4 75 >5 65 PKH
ARK



End trackline. No whales sighted. Sperm wh and dolphins heard
5/18/00 Off 2100 5028.4 2157.2
55 3



WSDO 20


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