đ Large-Scale Longline Vessel Activity in the Pribilof Zone
AIS tracking data documenting large-scale longline vessel operations (2012-2024). Explore the documented activity.
đ The Zone: 100nm radius around Pribilof Islandsđ The Data: AIS vessel tracking (2012-2024) documenting where and when vessels operateâī¸ Methodology: Speed â¤5 knots classified as "apparent fishing" (consistent with longline operations)
Vessels Analyzed
19
Large-scale longline vessels
5432.7
Cumulative tracked presence
18.8%
Of tracked positions
Avg. Apparent Fishing
66.3%
Speed â¤5 knots
Vessel Analysis
F/V ALASKAN LEADER
#1 Most Days in Zone
â 1.7 years of tracked presence
% in Pribilof:
20.48%
Apparent Fishing:
56.22%
1 in 5 points âĸ Speed â¤5 knots
Summer Activity:
45.14%
May-September months
Bycatch Rate:
43.0 lb/ton
Halibut per ton of Pacific Cod (106 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V BARANOF
#2 Most Days in Zone
â 1.4 years of tracked presence
% in Pribilof:
15.18%
Apparent Fishing:
42.86%
3 in 20 points âĸ Speed â¤5 knots
Summer Activity:
40.76%
May-September months
Bycatch Rate:
52.3 lb/ton
Halibut per ton of Pacific Cod (82 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V CLIPPER SURPRISE
#1 Highest % in Zone
â 1.1 years of tracked presence
% in Pribilof:
30.29%
Apparent Fishing:
63.23%
Nearly 1 in 3 points âĸ Speed â¤5 knots
Summer Activity:
45.5%
May-September months
Bycatch Rate:
86.5 lb/ton
Halibut per ton of Pacific Cod (122 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V CLIPPER EPIC
â 11 months tracked presence
% in Pribilof:
18.27%
Apparent Fishing:
70.98%
Speed â¤5 knots
Summer Activity:
35.01%
May-September months
Bycatch Rate:
51.7 lb/ton
Halibut per ton of Pacific Cod (113 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V FRONTIER MARINER
â 11 months tracked presence
% in Pribilof:
18.61%
Apparent Fishing:
70.61%
Speed â¤5 knots
Summer Activity:
33.25%
May-September months
Bycatch Rate:
59.0 lb/ton
Halibut per ton of Pacific Cod (120 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V BRISTOL LEADER
â 11 months tracked presence
% in Pribilof:
18.29%
Apparent Fishing:
70.19%
Speed â¤5 knots
Summer Activity:
33.15%
May-September months
Bycatch Rate:
40.5 lb/ton
Halibut per ton of Pacific Cod (99 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V BEAUTY BAY
â 10 months tracked presence
% in Pribilof:
24.46%
Apparent Fishing:
62.46%
Speed â¤5 knots
Summer Activity:
35.54%
May-September months
Bycatch Rate:
57.7 lb/ton
Halibut per ton of Pacific Cod (110 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V FRONTIER EXPLORER
â 9.5 months tracked presence
% in Pribilof:
27.18%
Apparent Fishing:
67.96%
Speed â¤5 knots
Summer Activity:
25.8%
May-September months
Bycatch Rate:
56.9 lb/ton
Halibut per ton of Pacific Cod (82 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V US LIBERATOR
â 9 months tracked presence
% in Pribilof:
21.8%
Apparent Fishing:
67.83%
Speed â¤5 knots
Summer Activity:
35.83%
May-September months
Bycatch Rate:
48.4 lb/ton
Halibut per ton of Pacific Cod (91 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V CLIPPER ENDEAVOR
â 8.5 months tracked presence
% in Pribilof:
15.79%
Apparent Fishing:
70.85%
Speed â¤5 knots
Summer Activity:
41.94%
May-September months
Bycatch Rate:
73.2 lb/ton
Halibut per ton of Pacific Cod (92 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V BERING LEADER
#1 Highest Fishing %
â 8.5 months tracked presence
% in Pribilof:
18.1%
Apparent Fishing:
76.56%
3 in 4 points âĸ Speed â¤5 knots
Summer Activity:
37.63%
May-September months
Bycatch Rate:
33.5 lb/ton
Halibut per ton of Pacific Cod (93 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V ALASKA MIST
â 8.5 months tracked presence
% in Pribilof:
14.97%
Apparent Fishing:
57.94%
Speed â¤5 knots
Summer Activity:
26.2%
May-September months
Bycatch Rate:
48.8 lb/ton
Halibut per ton of Pacific Cod (64 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V SIBERIAN SEA
â 8 months tracked presence
% in Pribilof:
15.95%
Apparent Fishing:
71.8%
Speed â¤5 knots
Summer Activity:
37.12%
May-September months
Bycatch Rate:
46.1 lb/ton
Halibut per ton of Pacific Cod (97 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V FRONTIER SPIRIT
â 7.5 months tracked presence
% in Pribilof:
25.72%
Apparent Fishing:
62.81%
Speed â¤5 knots
Summer Activity:
34.12%
May-September months
Bycatch Rate:
52.2 lb/ton
Halibut per ton of Pacific Cod (77 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V FLICKA
â 7.5 months tracked presence
% in Pribilof:
24.45%
Apparent Fishing:
66.93%
Speed â¤5 knots
Summer Activity:
31.94%
May-September months
Bycatch Rate:
21.9 lb/ton
Halibut per ton of Pacific Cod (44 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V NORTHERN LEADER
â 5.5 months tracked presence
% in Pribilof:
16.01%
Apparent Fishing:
68.65%
Speed â¤5 knots
Summer Activity:
40.35%
May-September months
Bycatch Rate:
22.6 lb/ton
Halibut per ton of Pacific Cod (65 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V ARCTIC PROWLER
â 5 months tracked presence
% in Pribilof:
14.03%
Apparent Fishing:
66.4%
Speed â¤5 knots
Summer Activity:
28.64%
May-September months
Bycatch Rate:
42.9 lb/ton
Halibut per ton of Pacific Cod (62 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V LILLI ANN
â 4 months tracked presence
% in Pribilof:
9.08%
Apparent Fishing:
71.29%
Speed â¤5 knots
Summer Activity:
30.03%
May-September months
Bycatch Rate:
54.4 lb/ton
Halibut per ton of Pacific Cod (46 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
F/V BLUE NORTH
â 2 months tracked presence
% in Pribilof:
8.32%
Apparent Fishing:
74.81%
3 in 4 points âĸ Speed â¤5 knots
Summer Activity:
32.09%
May-September months
Bycatch Rate:
32.9 lb/ton
Halibut per ton of Pacific Cod (30 weeks observed)
View Data & Maps â
4 interactive maps âĸ 12+ years tracked
đ Halibut Bycatch Analysis
View comprehensive analysis of halibut bycatch rates in the Pribilof Zone (2013-2024).
Interactive maps, vessel rankings, and year-by-year trends showing high bycatch events.
View Bycatch Analysis â
Data Attribution: Copyright 2024, Global Fishing Watch, Inc.
AIS vessel tracking data used under Creative Commons Attribution-NonCommercial 4.0 (CC BY-NC 4.0) license for non-commercial use.
Global Fishing Watch qualifies all designations of vessel fishing activity as "apparent" rather than certain due to inherent limitations in source data.
Data Coverage: This analysis uses AIS tracking data from 2012-2024, with some vessels tracked through early 2025. Vessel operational status may have changed since data collection. Some vessels documented here may no longer be in active service in the longline cod fishery.
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