JB/540/360/001

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middle of the Broad Part thus instead of the side, as in
common Rudders thus . This was for a reason which
Seamen will readily apprehend, and which I apprehended
at the time but have since forgotten.

The great principle upon which the advantage, expected
from this Construction in point of Swiftness depends, is,
that according to a Maxim received, my Brother says,
by all Ship builders theoretical as well as practical,
a Vessel meets with no sensible retardment from it's
length. But by increasing the length you may —
increase indefinitely the number of Rowers, and
consequently the moving force; while the increase
of Length as far as the above Maxim holds good,
makes no sensible addition to the resistance,
What sets Limits to the Length in all Plans of Construction
hitherto known is the Vessels Capacity of holding together without
falling to pieces by its own weight, which is called hogging
by Seamen. My Brother does not know that any body
before him ever put two Rows of Rowers close together on
the same side; they row without interfering with one
another in the least.

Of the Particulars contained in the above description scarce
any were furnished me by my Brother; his attention was
sufficiently taken up partly by an Ague, partly by the
Conducting of these unexampled and untryed Vessels,
with a Crew perfectly raw & unexperienced, through
a navigation rendered as dangerous by sunken or projecting
Stumps as a Sea navigation by Sunken Rocks.

When I embarqued he had had his Ague about 10 days, and
he was so weakened by it as to be unable to stand, & sometimes

Identifier: | JB/540/360/001 "JB/" can not be assigned to a declared number type with value 540.
Date_1	1787-05-03	Marginal Summary Numbering
Box	540	Main Headings
Folio number	360	Info in main headings field
Image	001	Titles
Category	Correspondence/copy	Number of Pages
Recto/Verso		Page Numbering
Penner		Watermarks
Marginals		Paper Producer
Corrections		Paper Produced in Year
Notes public		ID Number
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