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Pre-Season Shrimp Tows, Stonington, Maine, January 13, 2013

Three shrimp trawlers from Maine (from South Bristol, Stonington, and Sebasco) and one from New Hampshire made some experimental pre-season shrimp tows for one day during the week of January 13, 2013.  All data from the Stonington trip are listed below.

The Stonington boat averaged 124 pounds of shrimp per hour.  Its best tow was 256 pounds per hour.  Depths ranged from 30 to 48 fathoms, with the highest catch rate at about 40 fa. (see tow 2 below).  Count per pound was consistently about 34.  Most shrimp were still carrying eggs (see graph at bottom).

Please select one of these links, or scroll down the page:

Chart of the South Bristol area, Southport Is to Muscongus Bay

Size-sex-eggstage frequency graph
Note that almost all female shrimp were still carrying eggs (ovigerous, light blue).

Graph of shrimp sizes by sex and egg stage

Stonington Data for Each Tow, January 13, 2013
Date
Port
Boat Length (ft)
Area Towed
Tow
Latitude
Longitude
Depth (fath.)
Tow Minutes
Catch (lbs)
Lbs per Hour
Count per lb
Comments
Jan. 13
Stonington
40
1 start
end
44°02'31"
44°01'27"
68°31'41"
68°31'39"
30
36
28
5
11
33
"
"
"
2 start
end
44°01'27"
44°00'16"
68°31'36"
68°32'26"
39
43
30
128
256
33
"
"
"
3 start
end
44°00'57"
44°00'58"
68°31'52"
68°30'14"
39
41
30
113
226
34
"
"
"
4 start
end
43°59'13"
43°58'16"
68°34'48"
68°35'56"
42
47
30
97
194
33
"
"
"
5 start
end
43°58'16"
43°57'24"
68°36'03"
68°36'01"
47
48
27
5
11
34
Hauled back early due to fixed gear
"
"
"
6 start
end
43°59'14"
43°59'11"
68°38'20"
68°39'20"
37
43
30
22
44
35
           
Averages
41
29
62
124
34