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Nov. 19, 1946.
G, L, MARTm'
Filed Dec. 2, 1943
2 Sheets-Sheet 1
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Patented Nov. 3.9,‘ 1945
‘Glenn L. Martin, Baltimore, ,Md, passignor to The
Glenn L. Martin C0mpany,VMiddle River, Md., a -
corporation of. Maryland
Application December 2, 1943, Serial No. 512,533
2 Claims.
This invention relates to a novel‘ system and
apparatus relating: thereto, to facilitate the han
dling; mooring and; docking of large ?ying boats.
Due toithe necessity for keeping the structural
weight to a minimum in. aircraft, in order to
carry the maximum pay load, the hulls of ?ying
boats» are designed with- dueconsideration for all
conditions that, may be- encountered in normal
operation. These hulls, are, not of the massive
structure of1 Water craft and it is not advisable to
dock ?ying‘ boats by means of tugs usually em
ployed indocking ships. Care must be taken to
see-that the ?ying boat bulls are not damaged by
impact or; abrasion. when a?oat. The motive
power and. steering of ?ying, boat-s along open
water for take-cit. and landing is derived from
the propellersvan-d empennage but the empennage
is not adequate to- effect the precise control at
slow speeds necessary to dock such a craft. For
this reason, it has been necessary to develop aux
iliary handling and docking facilities for ?ying
The general object of this invention is to facili
tate the handling, mooring and docking of ?ying
boats of any size or shape.
More particularly, an object of this invention
to protect the sidesof any craft in case of impact.
Located on the shore structure or anyother
suitable-place are power operated winches 9; ill
and H. Winch 9 has a cable l2 secured ‘thereto,
which passes‘ through a pulley guide [3 and is
attached to either end of the boat. While the
invention isillustrated maneuvering the boat to
the dockbow first, it is possible to dock theboat
stern ?rst so that when it is moved from the dock
to open water, it will, be in position to continue
under its own power. The pulley guide 13- is
located at the, end of the path along which it; is
desired to move the boat.
Winches liland II have two drums each to
which cables I4, L5, l6‘ and Il are attached.
Cables: l2, I5 and I6~may be connected‘to a single
terminal» ?tting which is secured by a suitable
fastening device to- the bow or stern of the boat
or separate attaching means may be provided to
secure each cable to the boat. In a similar man
ner, cables l4 and I‘! may be joined to a fitting
which facilitates the attachment of the cables to
the boat. Floats l8 0n the cables make it easy
to pick up the cable ends for attachment to the
The cable is usually picked up from the water
is the provision of means to maneuver a ?ying
and secured to the hull by a docking crew in a
boat when a?oat, from open water into a posi
tion alongside a ?oating dock without bumping
or scraping the hull.
A further object of this invention is the pro
small boat along side the ?ying boat but the se
curing of the cable to the hull can be accomplished
by cable pick-ups on the hull.
In the preferred form of the invention, the
cables from the winches are rigged through the
pulleys on the buoys and joined at the attaching
?ttings. Cables l2, I5 and it are connected to
one ?tting and cable-s l4 and I‘! are attached to
another. These ?ttings are picked up and se
cured to the boat.
In order to dock a ?ying boat according to the
above described invention, the ?ying boat ap
proaches the off-shore end of the dock and stops
somewhere between the anchored buoys. Cables
l4 and I‘! are secured to one end of the boat and
cables l2, l5 and I6 are secured to the other end.
The points of attachment of the cables to the
?ying boat should be forward and aft of the
vision of ?ying boat handling facilities that in
volve readily available material and apparatus,
and which can be easily and quickly installed,
maintained and repaired.
rther and other objects will become apparent
from the description of the accompanying draw
ihgs which form a part of this disclosure and in
which like numerals refer to like parts.
In the drawings:
(01. 114—230)
Figure 1 is a perspective view of the schematic
arrangement of the invention.
Figure 2 is a plan view of the arrangement
shown in Figure 1.
Figure 3 is an elevational View of the arrange
center of resistance of the boat to cross winds or
The general arrangement of the invention illus
water currents. Pulley guide I3 determines the
trated in Figure 1, shows a ?ying boat I, ap
point toward which the boat will be towed.
proaching a U-shaped‘ ?oating dock generally
Winch 9 reels in cable 22 as winches H1 and II
indicated as 2. Ramp 3 is hinged to the floating 50 pay out cables Hi, [5, I6 and IT. The rate at
dock and also the shore‘structure so that the dock
which these latter winches are operated relative
rides the tide.
to winch 9 determines, in a positive manner, the '
In the water, off the end of the dock are an
path of the boat. An operator located in a con_
chored buoys 4, 5 and 6 and ‘I having pulleys 8
trol tower having full view of the docking pro
secured thereto. These buoys may be cushioned 55 cedure will, by remote control, manipulate the
cables by controlling the winches. The winches
I0 and II may be operated in unison or inde
pendently, as required to maintain the boat in
alignment against wind or tide.
To move a boat from the docking to open water,
the reverse operation of the winches is all that
is required.
It is to be understood that certain changes,
alterations, modi?cations and substitutions can
at a controlled rate of speed of the laterally ex
tending cables, the boat may be positively moved
along a predetermined path.
2. An apparatus for moving a seaplane rela
tive to a shore structure along a ?xed, predeter
mined path, comprising a towing cable and a pair
of continuous cables, the midpoints of'said pair
of cables adapted to be secured to the forward and
aft ends of a seaplane hull, a plurality of power
I claim as my invention:
vdriven winches on said shore structure to which
the ends of said pair of cables are attached and
by which said cables are reeled in or payed out, a
1. An apparatus for aligning a ?ying‘ boat with
pair of ?oating buoys anchored at’ laterally
be made so long as they do not depart from the _
spirit and scope of the appended claims.
a ?oating dock having the free end thereof ex
spaced positions relative to each side of said
tending toward open Water and the other end
movably secured to shore structure whereby said
path 'a'distance approximately equal to the wa- _
dock may ride the tide, a power driven winch
located adjacent the shore end of said dock, a
cable extending from said winch secured to the
path, said pair of buoys being spaced along the
terline length of said seaplane hull, cable guide
said pulleys on each side of said path, Winches
means on said buoys, each of the pair of said
cables extending transversely of said path sup
ported by a buoy on each side of said path, the
midpoints of said cables being located between
the buoys generally aligned with said path, a
cable guide on said shore structure at the shore
end of said path, said towing cable passing over
said last mentioned cable guide for moving the
seaplane along said path, terminals at the mid
points of saidcables detachably secured to said
engaging said cable‘at each shore end thereof, the
seaplane hull, ?oats located on the laterally ex
midpoint of said cable being secured to a terminal
tending portions of ‘the cables between the mid-
forward portion of the ?ying boat hull to control
the forward motion thereof along the dock, guide
means for said cable adjacent the shore end of
said dock, a plurality of anchored, ?oating buoy
supported pulleys located off the free end of the
dock laterally spaced from the desired path of
travel, a continuous cable passing through one of
on the end of said'?rst mentioned cable which 30 points and the cable guide means on said buoys
is secured to the forward portion of said hull, a
to maintain the midpoints of said cables near the
second continuous cable extending through pul
leys on laterally spaced buoys farther from shore
having winches on the shore ends of said con
tinuous cable, the midpoint of which is adapted
surface of the water, said Winches on the ends of
the continuous cables being operated at con
trolled rates of speed relative to said last named
winch to maintain the motion of the seaplane‘
to be secured to the oil-shore end of said sea
hull along said path and restrain said hull from ,
plane hull whereby upon the simultaneous reeling
in of the ?rst mentioned cable and paying out
lateral departures from said predetermined path.
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