Design: 



Name of designer — 

 Year designed — 



Construction: 



Name of builder — Grandy Boat Co., Seat- 

 tle, Wash. 

 Year completed — 1949 



Conversion: 



Year converted {if applicable) — 

 Name of facility doing conversion — 

 Seakeeping Characteristics: 



Perfo7-mance: 

 Pitch period- 

 Roll period — 



Comfort: 

 Decks wet- 

 Hull pound- 

 Motion easy — 

 Special Remarks: — 



JOHN N. COBB 



General Description: 



Capabilities — Exploratory fishing and gear 

 research 



Htdl style — West coast purse-seiner type 



Number of masts — 1 



Con struct io n ma teria I — Wood 



Method of fabrication — Sawed frames 



Screw type: 



Number of blades — 3 

 Fixed pitch or CP — Fixed pitch 

 Manufacture — Contractor furnished 

 Structural Parameters: 



Length: 



Length, overall (LOA)— 93'5V,." 

 Length, waterline (LTUL)— 8r>'0" 



Length, between perpendiculars (LBP) — 

 82'6" 

 Breadth: 



Beam, molded — 24'6" 

 Beam, extreme (including permanent pro- 

 jections)— 2b' &^/.i," 

 Draft: 



Maximum, loaded — 12' (approx) 

 Afean— 8'6" 

 Depth (main deck to keel, amidships) — 12'7" 

 Minimum freeboard, (loaded amidships) — 

 32" 

 Tonnage: 



Displacement (full load) — 250 tons 

 Gross — 185 tons 

 Net— IS tons 

 Complement: 

 Officers: 

 Deck— 2 

 Engineer — 2 

 Cretv: 



Fishermen- — 2 

 Seamen — 

 Oilers — 

 Wipers — 

 Cooks- — 1 

 Messmen — 

 Radiomen — 

 Others — 

 Scientific staff — 1 to 4 

 Other — Space for 2 extra 

 Operating Parameters: 



Range (lineal miles of steaming) — 4,800 

 Calculated endurance (days) — 21 days (fuel 

 consumption: 20 gal hr + 20 gal/ 

 day) 

 Performance (avg * days ivorked/year) — 



210 

 Speed: 



Cruising — 9 knots 

 Flank— lOy., knots 



Minimum possible (under steerageway) — 

 5 knots 

 Power: 



Main engine rating — Diesel, 8 cylinder, 2 

 cycle 

 Maximum BHP— 500 BHP at 540 rpm 

 Continuous BHP— Mb BHP at 375 rpm 

 Manufacturer — Fairbanks Worse 

 Auxiliaries (number) — 2 diesel, 3 cylin- 

 der, 4 cycle 

 Continuous BHP (each) — 45 BHP at 



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