Name of designer — (Design agent) M. 



Rosenblatt & Son 

 Year designed — Approved 6/9/52, New 

 York City 

 Construction: 

 Name of btiilder—Avondale Marine Ways, 



Westwego, La. 

 Year completed — June 1953 

 Conversion: 



Year converted {if applicable)- — Augnst 



1964 

 Name of facility doing conversion — Wil- 

 minprton Shipyard, Wilminprton, N.C., 

 Norlantic Shipyard, Fairhaven, Mass. 

 (1967 - addition of raised bow). 

 Seakeeping Characteristics: 

 Performance: 

 Pitch period — 1 

 Roll period — 1 

 Comfort: 

 Decks wet — 

 Hull pound — 

 Motion easy — 

 Special Remarks: — 



CHALLENGER 



General Description: 

 Cajtabilities: 



Hull style — Displacement 

 Number of masts — 2 

 Construction material — Wood 

 Method of fabrication — Bolted beams, nailed 



sheathing 

 Screw type: 



Number of blades — 3 



Fixed pitch or CP— 35" 



Manufacture — 

 Structural Parameters: 

 Length: 



Length, overall (L0.4)— 65' 

 Length, waterline (LWL) — 

 Length, betiveen perpendiculars (LBP) — 

 Breadth: 



Beam, molded — 



Beam, extreme (including permanent pro- 

 jections) — 16' 

 Draft: 



Maximum, loaded — 71/2' 

 Mean — 

 Depth (main deck to keel, amidships) — 2' 

 Minimum freeboard (loaded amidships) - 

 Tonnage: 



Displacement (full load) — 

 Gross — 

 Net— 

 Complement: 

 Officers: 



Deck — 1 (Master) 

 Engineer — 

 Crew: 



Fishermen — 

 Seamen — 

 Oilers — 

 Wipers — 



Cooks~l (deckhand) 

 Messmen — 

 Radiomen — 

 Others — 

 Scientific staff — 5 

 Other— 

 Operating Parameters: 



Range (lineal miles of steaming) — 500 

 Calculated endurance (days) — 3 

 Performance (avg * days irorked/year)- 



158 

 Speed: 



Cruising — 9 

 Flank— 9 



Minimum possible (tinder steerageway)- 

 2 

 Power: 



Main engine rating: 



Maximum BHP— 225 hp 

 Continuous BHP— ISO hp 

 Manufacturer — GM 671 

 Auxiliaries (number): 1 

 Continuous BHP (each) — 150 

 Poiver supplied ( each, max kw ) — 30 



16 



