Spccil'lc Recommendations on Vessel Dosipin and Construction 



Oi'l'icials of the major boat building and repair yards iriter- 

 vicxjcd ooe'a to bo aereod that the larger vessels now being launched 

 are constructed too lightly and have inadequate fastenings. 



Ihny builders produce tzio versions, a standard and do luxe, 

 of tno same hall. The latter usually costs oonsidci'ably more but the 

 stress is nrtinly on additional aesthetic features, such as the super- 

 structure. Only a sinall portion of the extra cost is applied to devices 

 doiiigned to strengthen the hull structure. 



The larger (67- to 70-foot) vessels dosigned for the distant 

 Campeche grounds should be built of sturdier material than the 55-foot 

 vessels. In actuality, tho structural differences beti/een the tvo in 

 the past have been f e^; tjhich has accounted for the smaller boat being 

 as rigid as tho larger one. Tho forotirabers, keels, keelsons, dcck- 

 buoms, and fraincs should be strengthened and treated \jith cuprinol. 

 All fastenings should ba improved and Monel bolts used in tho keel. 

 Sci'ovj-type galvanized nails should be used in place of the xjadge-type 

 nails. All of these improvements in construction, of course, \Jould 

 add to tho initial cost of the vessel, but would undoubtedly pay off 

 in the long run. 



Builders, otinors, and repair personnel have suggested that 

 the folloviing features be stressed. 



TJTil5c^ng.~All timbers used ehould be free of knots and 

 properly cm^ed. 'ilTo keel should be cLqug 12" x 12»';kaGl„c.ii 10" x 12"; 

 fi.iuiai 3" X I;" or 1;" x li", dreoLod and on 12" or 13" ctiitors; planlcing 

 I-3/I4" to 2", dressed; deck beams V x I4", on 13" centers. 



FaGtcninrca . — Tho keel must be bolted xdth high quality otain- 

 Itss steel or gulvi'niaod bolts to the frauies. All laiesj and for;itiiiibers 

 must ba SGCui'ely bolt:;d. Hull plrnlcing tiLould bo fastoncd vith £;civij- 

 typa nails cud the holes plugged iJxth i.'ood. IJails should not protruda 

 tla-ough the ribs. Butt blocI:3 are preferable and should be staggciied 

 and bolted through to the planlcs. 



Somiiing. — ^Ail seams in the planlcing should be properly caulked. 

 Tiis t;eatiier (i^cka ahould tevo adoquats cainber and should be caulked and 

 pitched, 



rVawa. — Sa\<3d or stoaniDd rib construction is satisfactory, 

 bub boiiding oi'^tho stoaiiied riba should not be hux-riod and tiiose ribs 

 that crack dulling the binding process should be discarded. 



Eyi"inni Bed.-" -The engine bod should be r.iado of dried timber 

 and of a lung oh not less than tvso-thirds of the boat lengtli. A metal 

 eliuu over tno engiiie bod mHI reduce shaft aligiiing problems. 



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