The Hawaii-based Longline Logbook Summary Report
April-June 2012

This report summarizes data on fish catch and fishing effort by Hawaii-based longline vessels during the second quarter of 2012 (Q2-2012). Results are based on the date gear was hauled, as reported by vessel operators to the National Marine Fisheries Service in federal logbooks of daily fishing activity. The report covers longline operations for fishing trips completed in the second quarter of 2012 and most, but not all, Q2-2012 data from trips that began late in the second quarter and continued into the third quarter of 2012. Therefore, the Q2-2012 summary statistics reported here are preliminary.

During Q2-2012, 128 vessels were active in the Hawaii-based fleet, 7 more vessels than in Q2-2011 (Table 1, Fig. 1). They made 368 longline trips (11 less than in Q2-2011), including 339 using deep-set gear to target tuna (5 less than in Q2-2011) and 29 using shallow-set gear to target swordfish (6 less than in Q2-2011; Fig. 2). During Q2-2012, the fleet deployed 10.3 million hooks, about 6% more than in Q2-2011 (Fig. 3). They fished mainly on the high seas outside the U.S. Exclusive Economic Zone (EEZ) (75% of the total hooks set), followed by the EEZ of the main Hawaiian Islands (MHI) (12%), the Northwestern Hawaiian Islands (NWHI) EEZ (7%), and the EEZ of the U.S. Pacific Remote Island Areas (PRIA, consisting of U.S. possessions Wake Island, Jarvis Island, Howland Island, Baker Island, Kingman Reef, Palmyra Atoll, and Johnston Atoll) (6%).

In Q2-2012, the Hawaii longline fleet caught 30,153 bigeye tuna (Table 1, Fig. 4); 81% were caught in waters outside the U.S. EEZ. The bigeye tuna catch-per-unit-of-effort (CPUE) on tuna-targeted trips was 3.1 fish per 1000 hooks, down 12% from Q2-2011 (Fig. 5). The albacore catch and CPUE on tuna-targeted trips in Q2-2012 were 10,127 fish and 1.03 fish per 1000 hooks, respectively (Table 1, Figs. 6 - 7). The yellowfin tuna catch and CPUE on tuna-targeted trips in Q2-2012 were 5,866 fish and 0.59 fish per 1000 hooks, respectively (Table 1, Figs. 8 - 9).

The Q2-2012 swordfish catch was 5,593 fish, about the same as the swordfish catch in Q2-2011 (Table 1, Fig. 10). In Q2-2012, the swordfish CPUE on shallow-set swordfish-targeted trips was 8.8 fish per 1000 hooks, about the same as in Q2-2011 (Fig. 11).

The striped marlin catch in Q2-2012 was 2,070 fish, and the CPUE on tuna-targeted trips was 0.19 fish per 1000 hooks; the catch decreased 40% and CPUE 42% from their values in Q2-2011 (Table 1, Figs. 12 - 13). The blue marlin catch in Q2-2012 was 1,324 fish with a CPUE of 0.13 fish per 1000 hooks on tuna-targeted trips (Table 1, Figs. 14 - 15).

The fleet caught 15,151 sharks in Q2-2012, of which 334 (2%) were kept. Blue shark comprised 68% of the total shark catch (10,233 fish) (Table 1, Fig. 16). Blue shark CPUE on shallow-set swordfish-targeted trips in Q2-2012 was 3.1 fish per 1000 hooks, 19% lower than in Q2-2011 (Fig. 17).

In Q2-2012, the Hawaii longline catch of other key pelagic species included 11,632 mahimahi (Table 1, Fig. 18) with a CPUE of 0.96 fish per 1000 hooks on tuna-targeted trips (Fig. 19); 4,170 moonfish (Table 1, Fig. 20) with a CPUE of 0.42 fish per 1000 hooks on tuna-targeted trips (Fig. 21); 15,579 pomfret (Table 1, Fig. 22) with a CPUE of 1.6 fish per 1000 hooks on tuna-targeted trips (Fig. 23); and 4,910 wahoo (Table 1, Fig. 24) with a CPUE of 0.50 fish per 1000 hooks on tuna-targeted trips (Fig. 25). A high percentage of the catch of these species was kept.

The summary statistics in Table 1 are based on logbook records from all fishing areas combined and all types of longline trips—those targeting swordfish and those aimed at catching tuna. Hence, the CPUE figures in Table 1 differ from those reported above, which were calculated using data exclusively from tuna-targeted trips or swordfish-targeted trips, depending on the species of interest.

The longline logbook statistics reported above refer to all fishing areas combined. Q2-2012 summary catch and effort were also compiled by several geographical sub-areas including: the MHI EEZ; the NWHI EEZ; the PRIA EEZ; the combined EEZ of MHI, NWHI and PRIA; and waters outside the U.S. EEZ. These statistics are presented in Tables 2 - 6. Q2-2012 summary statistics for the entire fishing area are also presented for each distinct trip type: swordfish-targeted trips using shallow-set gear (Table 7) and tuna-targeted trips deploying deep-set gear (Table 8).

This website also provides a PDF version of the report [ download report (0.7 MB PDF) ], a separate collection of quarterly and yearly charts, and an archive of quarterly and annual summary tables of fish catch and fishing effort from 1991 to the present. The statistics in the online graphs and archived tables are updated periodically as new records are added to the database and corrections are made.