Contents (Cont'd) 



Page 



Color of V/ater <> o 46 



Weather Summary o . . . <> 47 



New Seamount Discovery o » . 47 



Genfiral Description 47 



Commercial Fishing Possibilities 50 



Obser^'ations on Marine Life 52 



Summary ».. » 54 



Literature Cited 55 



Illustrations 



Figure Page 



1 The Exploratory Vessel John N. Cobb Trolling for Albacore 5 



2 Chart of the Northeastern Pacific Showing Area of Operation 



by the Cobb in 1950 6 



3 Deck Plan of the John N. Cobb Pdgged for Albacore Fishing .,,,<, 9 



4 Troll-caught Albacore Are Pulled and Landed by Hand , 10 



5 Surface-trolled Jigs and Long-line Hooks Used by the Cobb ...o, n 



6 Diagrams of the Gill Net Used in Taking Albacore 13 



7 The Gill Nets Were Always Set with the Corkline to 



Windward so that the Web Would Blow Over the Lead 



Line and Not Foul on the Floats ..<> 14 



8 Rollers and Table Used in Hauling the Gill Nets <. I5 



9 The Gill Nets Were Hauled from the Starboard Side Amidships ... I5 



10 Most of the Albacore V.'ere Removed from the Nets on a 



Plywood Table Between the Rail and the Hauling Sheave I6 



11 Considerable Difficulty V.'as Encountered at Times in 



Removing the Albacore from the Gill Nets Without 



Breaking the Meshes or Injuring the Fish a 16 



12 The Gill Net Was Overhauled and Repaired Periodically 



Before Stowing on the Stem Behind the Bait Tank 17 



13 Three Men in the Stem Bin Stow the Gill Net in 



Preparation for the Next Set ., ». 17 



14 Make-up of Surface Long Line 18 



15 In Hauling the Long Line Reg\ilar Halibut Rollers Were Used. ,.», 19 



16 Close-up of Halibut Roller Used in Hauling the Surface 



Long Line » 19 



17 Chart Showing Centers of Abundance of Albacore 



Concentrations as Found by the John N, Cobb in 1950 ....... s 21 



18 A Catch of Albacore Is Removed from the Gill Nets 22 



19 Blue Shark up to 6 Feet in Length Were Taken in Most 



of the Gill-net Sets , 25 



20 Pomfret ( Brama raii), A Rather Tasty Fish, Were Taken 



in Several Gill-net Sets 26 



21 Jack Mackerel ( Trachurus symmetricus ) . A Surface-swimming 



Fish, Was Taken in the Nets on Five Different Occasions ..00 26 



22 About 25 Per Cent of the Gill-net Fish Were Damaged Either 



Directly by the Nets, or in a Few Cases, Eaten by Sharks .», 29 



23 Albacore Were Measured in a Trough-like Wooden Box with 



a Meter Stick Attached to One Side .» 30 



