"double-bottom," also i ailed .1 "sluiceboat" or 

 "cylinder," was later lengthened al the stei 

 make hi 1 10 feet o 1 erall. 



rhe King did not support Petty, to the latter's greal 

 disappointmi nl d Pett) next buill .1 largi 1 double- 

 botton - i II. This 1 atamaran was lapstrake 



construction. Not much is known of this l»>.ii excepl 

 that she beat the regulai Irish packet boat, running 

 between I lolyhead and 1 lublin, in .1 race each way, 

 winning a E20 wager. s Ih- was launched in July 

 1663; what became ol hei was not recorded. 



A third and still largei boat, the £ tperiment, launched 

 Deo tnbei 22, 1664, appears to have I" 

 sloop. Tins vessel sailed l>\ wa) ol the Thames in 

 April 1665 and went to Oporto, Portugal. She left 

 Portugal < Ictober 20, 1665, foi home, but apparently 

 went down with .ill hands in a seven storm. 



For 18 years IVtn did no more with the type, but 

 finally, in Jul) 1684, he laid down .1 still largei sloop 



Figure 8. Danish copy uginai sau plan ol Robert Fulton's S 



Battery, dated September 12, 1817, in Rigsarkivet, Copenhagen. 



PAPER 39: FULTON s -si 1 AM l: \ ITF.RY 



153 



