Alberti, Leone Battista, Architecture, 1755

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1may in a Moment, in the midſt of an Engage­
ment
, be filled with ſharp Points ſticking up
cloſe
to one another, ſo that an Enemy can
never
ſet his Foot any where without a Wound;
and
on the other Hand when there is Occaſion,
how
all theſe may in leſs Space of Time be all
removed
and cleared away; but this is not a
proper
Place for repeating it again, and it is
ſufficient
to have given the Hint to an ingeni­
ous
Mind.
Moreover I have found a Way how,
with
a ſlight Stroke of a Hammer, to throw
down
the whole Floor, with all the Men that
have
boarded the Veſſel and ſtand upon it, and
then
again with very little Labour to replace
it
as it was before, whenever it is thought ne­
ceſſary
ſo to do.
Neither is this a proper Place
to
relate the Methods which I have invented
to
ſink and burn the Enemy's Ships and de­
ſtroy
their Crews by miſerable Deaths.
We
may
perhaps ſpeak of them elſewhere.
One
Thing
muſt not be omitted, namely, that Veſ­
ſels
of different Heights and Sizes are requi­
ſite
in different Places.
In the Mare Mag­
giore
, in the Narrows among the Iſlands, a
large
Ship, that cannot be managed with­
out
a great Number of Hands, is very un­
ſafe
when the Winds are any thing boiſterous:
On
the Contrary out of the Strait's Mouth, in
the
wide Ocean, a little Veſſel will not be able
to
live.
To this Head of maritime Affairs alſo
belong
the Defending and Blocking up a Ha­
ven
.
This may be done by ſinking any great
Body
, or by Moles, Piers, Chains and the like,
whereof
we have treated in the preceding
Book
.
Drive in Piles, block the Port up with
huge
Stones, and ſink large hollow Frames
made
either of Planks or Oziers and filled
with
any heavy Stuff.
But if the Nature of
the
Place, or the Greatneſs of the Expence will
not
allow of this, as for Inſtance, if the Bot­
tom
be a Sand or Mud continually moving, or
the
Water be of too great a Depth, you may
then
block up the Haven in the following
Manner
.
Make a Float of great Barrels faſten­
ed
together, with Planks and Timbers joyned
croſs-ways
to one another, and with large
Spikes
and ſharp Beaks ſticking out from the
Float
, and Piles with Points of Iron, ſuch as
are
called ſhod Piles, to the Intent that none
of
the Enemy's light Ships may dare to drive
againſt
the Float with full Sails, in order to
endeavour
to break or paſs it.
Dawb the Float
over
with Mud to ſecure it againſt Fire, and
fortify
it with a Paliſado of Hurdles or ſtrong
Boards
, and in convenient Places with wooden
Towers
, faſtening the whole Work againſt the
Fury
of the Waves with a good Number of
Anchors
concealed from the Enemy.
It would
not
be amiſs to make ſuch a Work ſinuous or
wavy
, with the Backs of the Arches turned
againſt
the Streſs of the Weather, that the
Float
may bear the lefs upon its Anchors.
But upon this Subject, thus much may ſuffice.
CHAP. XIII.

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