24 ? 
the Enemy’s Cahnon, and are expofed to the Waves by 
their having fo little Height above Water. 
It may be proper to explain the Advantages there 
are in boarding, or getting clear of the Enemy,by means 
of the new Oars. 
The chief Advantage, and which includes all the 
reft, is, that let a Veftei crowd as much Sail as poftible, 
the perpendicular Oars are always capable of in- 
creasing her Swiftnefs, becaufe the Rowers have only 
a Motion of three Foot to make one Way, and as 
much the contrary Way, in order to make tlte Oars 
deferibe four and fifty Foot Space in the Water, and 
that Motion of fix Foot might be perform’d in two 
Seconds of Time, if the Oars met with no Refiftance ; 
confequently the Veftei muft run four and fifty foot 
in two Seconds, that is, about fix Leagues an Hour, , 
before thofe revolving Oars be unferviceable, for then 
the Veftei would go as fall as the Oars could poftibly 
move with a Diameter of eighteen Foot ; and if it was 
neceftary to make them move fafter, it is only length- 
ning out their Diameter, and they would move fo 
much the fafter, without obliging the Rowers to in- 
creafe the-ir own Motion. 
Mr. Arnoult was order’d to examine the new Oars,° ; 
and he made his Report to the Court, that the Offi- 
cers of the Gallies found, that they interfered with the 
Ufe of the Sails in a Gaily, but might be of Ufe in other • 
Veftels and Bomb-ketches ; in Confequence of which, . 
I wasfent to Toulon to make the Experiment on Board a, 
Bomb-ketch. 
At the Time when the Experiment was made, . 
Mr. de Vauvre , and the Officers of the Marine were- 
at Sea, and only fome Officers of the Port werepre- - 
Mm fent*. 
