CA2988422A1 - A trimaran single-person flat water fishing craft comprising dual operating stations and a double anchoring system - Google Patents

A trimaran single-person flat water fishing craft comprising dual operating stations and a double anchoring system Download PDF

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Publication number
CA2988422A1
CA2988422A1 CA2988422A CA2988422A CA2988422A1 CA 2988422 A1 CA2988422 A1 CA 2988422A1 CA 2988422 A CA2988422 A CA 2988422A CA 2988422 A CA2988422 A CA 2988422A CA 2988422 A1 CA2988422 A1 CA 2988422A1
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boat
hull
anchor
stern
bow
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Abandoned
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CA2988422A
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French (fr)
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Cunningham Joel R
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Cunningham Joel R
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Publication of CA2988422A1 publication Critical patent/CA2988422A1/en
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Abstract

Current unpowered, single person watercraft in use for the purpose of lake fishing suffer from a number of design characteristics which cause one or more problems. These problems have been addresses in various ways that ultimately leave a number of issues unaddressed in previous craft.
Issues include:
1. Many are too heavy to be dealt with easily by many elderly, young, or small in stature users without expensive accessories.
2. Poor tracking in windy conditions is a persistent issue.
3. Fisher persons value the ability to stand up, both for casting and better vision below the water's surface. Many previous craft either ignore this or give up payload capability, lightness of weight, speed, or hydrodynamic principles to accomplish this.
4. Many previous craft, in particular those which are light and unpowered compromise comfort to facilitate portability and perceived lower cost. This may be the result of seat type and position as well as the need to dangle flippered feet in the water.
5. Stealth (important in fishing), a function of glide, is sacrificed in previous flat boats and some inflatable boats to enable greater lateral stability. These boats often slap the waves and create loud sounds.
6. The ability to stay put, in a non-drifting position in some types of lake fishing is highly valued. One of the most effective ways to accomplish this is double, vertical anchoring. The design of many previous single person fishing boats is too short to accomplish this effectively.
7. A major issue in small, unpowered, slow moving boats is safety. One of the major safety issues arises when weather conditions change suddenly. Many operators of previous small, single-person, unpowered fishing craft have been caught unaware and unable to easily get back to a safe landing site in non-sea worthy, non-hydrodynamic, slow moving and poorly tracking craft.
The present inventions uses a number of both overall design innovations unique to the craft here considered, and some unique specific details to address the above issues as well as improve on some other common boat details in an elegant and simple manner.
ADDRESSING #1 This present invention is designed to present minimal problems for transport.
All the rigging which stays on the boat permanently is mounted BELOW the gunwales so that the boat can be slid onto a roof rack in the same way as a regular canoe. For example, outriggers on small boats such as canoes and kayaks are not unknown. However, the booms that secure an outrigger float to the hull tend to extend above the gunwales of the boat as these booms are generally secured across and over the gunwales. Also, non-inflated fishing boats that can be put on a roof rack in some fashion are tend to be much heavier than the present invention as fabrication with Kevlar is either virtually impossible (fishing kayak) or impractical due to expense (Jon boat). Pontoon boats can be light as well but have major limitations related to performance (speed, tracking, anchoring, comfort, safety) compared to the present invention. Furthermore, it is easy to carry 2 of these boats on the roof of a regular vehicle ... almost impossible with other fishing boats. The piercings for the outrigger float booms are reinforced to relieve stresses in the composite material of the hull by applying a reinforcing plate around the piercings. The reinforcing plate is both adhered and secured using screws. The reinforcing plate is preferably of a lightweight material such as aluminum but may also be a built up pad of resin impregnated fibre such as kevlar or glass fibre. Similarly, the rigger beam that supports the oarlocks on the present invention pass through the hull as described above.
The hull of the present invention is 14' 2" and made from lightweight kevlar and resin. The bare hull weighs 30 lb., with semi-permanent rigging attached it weighs 40 lb. This is below the 50-60 lbs that an adult can generally safely lift alone. This means that the hull and the rigging that may remain attached thereto can be easily lifted from the water and placed on a roof rack of a car.
Furthermore, the beam of the boat is 34" and 2 of these can be placed side by side on a typical roof rack system. The boat of the present invention is intended to be somewhat modular in that the seat, pontoons, oarlocks, anchor reels, and rigger booms may be removed from the boat with relative ease. This permits structures that may extend above or laterally from the gunwales of the boat, or, weight that is present unnecessarily during transport, to be readily removed so the boat can be more easily transported. This also allows for easy repair or replacement should a component of the boat be damaged or lost.
ADDRESSING #1, 3, 5, 6, & 7 Using a 14' 2" ultra light canoe hull as the central hull of the present invention allows for a number of substantial advantages that are key aspects of the boat.
1) The canoe shape is inherently hydrodynamic. It cuts and glides. The lighter it is the less force is needed to propel it. These characteristics are inherently desirable, but only by adding features described throughout this document ( which maximize both roll stability and tracking stability) can this be taken advantage of while at the same time maximizing fishing functionality. This is primarily accomplished by adding pontoon outriggers and oars incorporating outriggers, and having them strategically placed. These features are mainly what makes the present invention fast, powerful and stable 2) The relative substantial length of the boat along with substantial freeboard (unlike a pontoon boat or fishing kayak) allows much greater cargo capacity than any other unpowered single person boat that can match the current invention in lightness, speed, and seaworthiness. This length also enables a number of other unique features of the Chironomid:
3) Having the anchors 14' apart maximizes the stability of the 2 anchor/vertical anchoring approach of many stillwater fly fisher persons. Where used for fly fishing, one may wish to position the boat relative to a feature where fish are likely to congregate. Similarly, where one uses the boat of the present invention for shooting, one may wish to remain in place behind a blind or obscuring foliage.
In this case it is desirable to include both fore and aft anchors that can be used to secure the boat in location with a specific angular orientation. And, as it can be difficult to access and operate anchors at the bow and stern of a craft, it is preferable for the lines that secure the anchors to be routed to winches positioned adjacent the seat of the craft. In this way, the anchors of the craft can be deployed without needed to move to the bow or stern. The boat employs a unique built-in double anchor reel mounting system that "snaps" anchor reels into place in 2 seconds with one hand and has a unique flip lock located on the mount which engages the reel itself.
4) It enables the simple and unique 4 rod-horizontal-holder system which allows casting without having vertical rods in traditional rod holders blocking back casts.
The unique rod holding system of the present invention can also stay on the boat permanently while adding virtually no weight AND with a simple flip, be below the gunwales for loading on roof racks.
5) Having this amount of length allows the outboard and inboard rigging to be entirely located in the stern of the boat. This enables the boat to be set up with a swivel seat near the centre of the boat allowing room for the pilot to be able to swing around facing the stern while rowing and facing the bow while anchored for still fishing, still leaving substantial room for gear and foot room plus having a relatively clear space to prevent tangles and encumbrances in the bow (casting) end. Because of the light weight, hydrodynamic hull, long spoon oars that propel by rowing like a racing scull, and the stability and tracking characteristics of the Chironomid this boat dramatically decreases the need for a motor, battery, battery charger and, with heavier boats, the need for a hydraulic lifter or trailer as well.
ADDRESSING #2 & 3 This pivot point between 2 "work stations" (so to speak) is unique among one person fishing boats. This unique design contributes to another key feature of the current invention.
6) Having the 2 outriggers in the stern end also increases the resistance to tracking swing (so common and problematic in a standard canoe for example).
Technically this is accomplished by effectively increasing the swing radius (hence resistance) with respect to the horizontal plane's fulcrum and centre of gravity, which, on the horizontal plane, is located at the centre point of the hull where the fisherman sits or stands. This allows the 2 outrigger pontoons to act like a sailboat keel in some respects, while at the same time affording the Chironomid high "initial" stability (allowing maximum standing freedom) due to the wide stance of the pontoons (7.5 feet). This wide stance is possible BECAUSE the stern mounting of the pontoons allows sufficient clearance for the 7.5' spoon oars.
ADDRESSING #3 & 4 High initial stability (describes above) allows the seat to be high relative to the norm in many previous craft, and much higher than any standard canoe, almost as high as a kitchen chair (the seat of the boat is 16" high), but more comfortable as it is padded as well. The lake fishermen demographic comprises an older cohort than other types of fishing. 50 to 70 year olds who spend up to 10 hrs at a stretch on the water need the comfort that this affords. This height facilitates ease of standing without additional supports or undue exertion and allows dynamic motion. Having the seat at this height facilitates a position that puts the knees at approximately a 45 degree angle. Technical studies have shown this to be an optimum ergonomic position when engaged in activity that is active and occasioned by both sitting and standing. The boat has 40 lb. of added flotation in each pontoon. This added stability, though not making the boat capsize proof, enables an average user to displace their upright centre of gravity within a range of movement of approximately 2 feet side to side. This is a good compromise against size, weight, and drag. [Once a pontoon is submerged the centre of gravity immediately passes the centre of buoyancy.] Another benefit to the presence of outrigger pontoons in the present invention is that the increased stability of the hull prevents water from entering the hull through the piercings.
Because the boat does not tip to any significant degree, the piercings, placed high up on the side of the hull near the gunwale, do not ship water. Of course, waves might cause water to enter the piercings but these conditions are not likely to be experienced under normal conditions.
ADDRESSING #1 & 6 In previous craft anchor deployment systems are treated as after market accessories. Often involving a cam cleat and pulley wheel they are mounted above the gunwale. In the present invention anchor line slides of stainless steel and aluminum guide posts are permanently installed on the bow and stern deck plates. The slide and guides actually double as bow and stern point protection from rocks and gravel while loading and unloading. No additional accessory is need, and this system does not impede the the boat from being easily slid along the rails of a roof rack while loading.

Description

ELEMENTS
The boat of the present invention is divided into 11 components displayed in Fig.
1 - Top View and Fig.2 - Side View.
1. Seat - A padded swivel seat affixed to a horizontal aluminum extrusion comprised of 3 channels and affixed to aluminum angles which are, in turn, affixed to the aluminum gunwales approximately 2" astern of the beam of the main hull. The horizontal aluminum support extrusion is adjustable in as much as it can be moved 2 inches towards the bow or stern to accommodate the reach of individual rowers. The seat surface is level and approximately 16" above the floor of the hull.
2. Pontoons - The pontoons are of roto-molded high density polyethylene, 40"
in length, providing 40Ib. of buoyancy each, attached by means of a clevis pin to a 3/4" aluminum tube, which, in turn, pierces a aluminum clamping bracket inserted into a rectangular aluminum arm which, in turn, slides out from a larger aluminum tube, telescoping style, which comprises the boom across the main hull. No claim is made for the pontoons which are in the public domain. What is unique to the present design is the method by which the cross boom, or receiving tube is attached below the gunwales and through the hull, the distance they are affixed from the stern, and the distance between the pontoons. These details are key to the overall design of the boat as described above.
3. The pontoon receiver tube is located 34" from the stern. The boom puts the pontoons 7.5' apart. These dimensions maximize the boats initial horizontal stability (minimal initial sway) by giving the boat a wide stance. This is possible because the pontoon's distance from the our locks is maximized for clearance of 7.5 foot oars. These dimensions maximize angular stability (tracking) by maximizing the pivot point (pilot) radius of the outriggers, in effect creating more drag on the hulls ability to rotate about it's fulcrum.
These dimension are key and unique to the present invention.
4. The oars are 7.5 foot spoon bladed oars with a fulcrum (close to grip point) designed to minimize torque and maximize the speed and distance travelled of the oar blades. This is desirable as the boat is very light and requires little torque. In this fashion speed is maximized. This is an integral part of the design. The oars, oar collars and oar pins are in the public domain.
5. The oar rests, unique to the present invention, consist of 2 identical formed aluminum bars (9" high) bolted in mirror image fashion to form a V. These rests are riveted or screwed to the outrigger boom arm 3" from the pontoon shaft clamp.
6. The oar outriggers (b) are located 16" from the pontoon boom. They are constructed of formed square tubular aluminum (available in the public domain) piercing the hull 1" below the gunwales in 2 places, 16" apart, secured on one end with a pop button lock just outside the hull and on the other end with a C bolt just inside the hull. Affixed to the bend of this structure is a unique aspect of the present invention - the bushing towers (a) constructed of ultra-high molecular weight polyethylene. The towers are one inch thick and 7 inches in height. This height is critical to the overall design of the boat. The tower receives the oar bushing pin through a bushing hole in the top of the tower. This allows the oars to clear the top of the gunwales by 6 inches allowing for sufficient clearance of the oar handles with respect to the pilot in the seat as the seat platform plus seat edges rise 4.5 inches above the gunwales.
7. The anchor reel system is a unique aspect of the present invention. It is comprised of 2 parts: the unique mount system, and the plastic reel itself which is a modified version of a proprietary product manufactured by Ruslyn Holdings in Australia - USA Patent 9038936. The 2 reel mounts are permanently affixed underneath the lip of the gunwales on the inside of the hull between the 2 points where the oar outriggers pierce the hull. They are comprised of a 14" 3 channel aluminum extrusion machined in a T shape with a middle section extending 2.5 inches inward from the gunwale and shaped to fit the rectangular opening in the centre of the reel. A small bolt extends vertically through the mount and attaches an aluminum flipper (b) with a rubber button attached with a small bolt through the flat face of the flipper. This button can be pushed back or pulled forward to release or engage the backside series of 8 holes on the outer edge of the plastic reel. This locks the reel in place so the anchor line will be secure in either the raised or lowered (anchored) position. To the middle of the main body of the reel mount is affixed a mechanism which locks the reel to the mount, or allows quick installation or uninstallation of the plastic reel. Having the reel removable maintains the objective of having all components that are permanently or semi-permanently attached to the boat BELOW the gunwales. This mechanism consists of a spring-loaded thumb screw under which is placed an aluminum toggle (a). The thumb screw permits adjustable tensioning of the quick release toggle.
8. The rod mount system is a unique aspect of the present invention. The holders consist of 2 blocks of high density polyethylene foam containing cut grooves (4) to receive rod handles and rod shafts. They are approximately a foot long and 1 inch thick.The foam blocks are mounted on the receiver booms of the outriggers by means of shock chords (c) through the grooves and around the receiver tubes. The block for the shafts (b) are higher than the blocks for the handles (a) to allow the rods to lie close to the horizontal plane, but clear the deck plates and anchor line guides of the stern. The blocks will hold up to 4 rods securely in this almost horizontal position. This allows, for example, fly casting without the encumbrance of any objects of significant height interfering with the angler's back cast.
9. The deck plates and incorporated line guides are a unique aspect of the present invention. The deck plate is constructed from high density polyethylene (a) ,3/8" thick, and attached to the gunwales by bolts. It is 11' long, 7' wide, and tapers to 3" wide at the bow and stern points where it extends 1/2" beyond the hull point and is capped with a rounded stainless steel slide with 2 lateral guide posts on bolts extending through the entire plate (b). The bolts through the slide are stainless steel allowing the slide and guides to double as both an anchor line guide a as well as point protection for the boat when loading and unloading.
10. The receiver boom mounts are an integral part of this boats design and a unique aspect of the present invention. The mounts frame the piercings through the hull with a flat 3'x 2.5" aluminum plate on the exterior of the hull, overlapping the gunwale trim and a similar, but angled, aluminum plate sandwiching the hull on the interior. (a) The horizontal portion of the interior plate contains 2 oblong holes which receive a U bolt which arches over the top of the particular aluminum square tube (b) it is holding tight (by means of thumb bolts (c) to the receiver mount fixture. These fixtures enable the boom rigging to be below the surface of the boats gunwales allowing the boat to be easily slid on a roof rack, as well as giving the boat smooth lines while throwing fly line about.
11. Hull.

Claims (14)

1l claim:
A) The watercraft as shown and described.
B) A single person watercraft for fishing, hunting or similar sporting activities on flat water comprising:
1. a 7.5' wide trimaran stance with a central streamlined main hull which is pierced below the gunwales allowing horizontal beams to protrude through the hull to affix rigging of oar and pontoon outriggers; and of 34" beam with a fore and aft built in anchor system including anchor line through a slide on the deck plate.
2. 3 hulls, oars, oar outriggers, anchor line reels, horizontal sculpted foam rod mounts, booms and pontoons that can to assembled and disassembled in 5 minutes leaving a central portion weighing 40 lb. that can slide back and forth easily on almost any standard roof rack.
3. a configuration that has all the operational rigging which is attached to the main hull (except the bow anchor line) located in the stern half of the craft.
4. 2 distinct operating positions: a) rowing and operating anchor reels, facing the stern; and b) fishing from a standing or sitting position facing the bow, the 2 operating positions separated by a swivel-mounted raised seat in the approximate middle of the main hull.
5. a central, main hull containing 2 side-mounted anchor line reels held in place by a quick-release toggle.
6. all mounting components, which are permanently attached to the main hull, being affixed below the gunwale line.
7. an anchor line guide system on the bow and stern hull points that employs no moving parts at the juncture where the line must change direction from horizontal to vertical.
8. mounting components, which are permanently attached to the main hull, being affixed below the gunwale line; and a configuration that has all the operational rigging which is attached to the main hull (except the bow anchor line) located in the stern half of the craft.
9. mounting components, which are permanently attached to the main hull, being affixed below the gunwale line; and a configuration that has all the operational rigging which is attached to the main hull (except the bow anchor line) located in the stern half of the craft; and having 2 distinct operating positions: a) rowing and operating anchor reels, facing the stern;
and b) fishing from a standing or sitting position facing the bow, the 2 operating positions separated by a swivel-mounted raised seat in the approximate middle of the main hull.
10.
mounting components, which are permanently attached to the main hull, being affixed below the gunwale line; and a configuration that has all the operational rigging which is attached to the main hull (except the bow anchor line) located in the stern half of the craft; and having 2 distinct operating positions: a) rowing and operating anchor reels, facing the stern;
and b) fishing from a standing or sitting position facing the bow, the 2 operating positions separated by a swivel-mounted raised seat in the approximate middle of the main hull; and having 3 hulls, oars, oar outriggers, anchor line reels, horizontal sculpted foam rod mounts, booms and pontoons that can to assembled and disassembled in 5 minutes leaving a central portion weighing 40 lb. that can slide back on forth easily on almost any standard roof rack.
11. mounting components, which are permanently attached to the main hull, being affixed below the gunwale line; and a configuration that has all the operational rigging which is attached to the main hull (except the bow anchor line) located in the stern half of the craft; and having 2 distinct operating positions: a) rowing and operating anchor reels, facing the stern;
and b) fishing from a standing or sitting position facing the bow, the 2 operating positions separated by a swivel-mounted raised seat in the approximate middle of the main hull; and having 3 hulls, oars, oar outriggers, anchor line reels, horizontal sculpted foam rod mounts, booms and pontoons that can to assembled and disassembled in 5 minutes leaving a central portion weighing 40 lb. that can slide back and forth easily on almost any standard roof rack; and having a 7.5' wide trimaran stance while having a streamlined main hull of Kevlar which is pierced below the gunwales allowing horizontal beams to protrude through the hull to affix rigging of oar and pontoon outriggers, and of 34" beam.
12. a 7.5' wide trimaran stance with a central streamlined main hull which is pierced below the gunwales allowing horizontal beams to protrude through the hull to affix rigging of oar and pontoon outriggers; and of 34"
beam with fore and aft built in anchor system including anchor line through a slide on the deck plate; a configuration that has all the operational rigging which is attached to the main hull (except the bow anchor line) located in the stern half of the craft; and having 2 distinct operating positions: a) rowing and operating anchor reels, facing the stern; and b) fishing from a standing or sitting position facing the bow, the 2 operating positions separated by a swivel-mounted raised seat in the approximate middle of the main hull; and a horizontal sculpted foam rod holding system.
13. a 7.5' wide trimaran stance with a central streamlined main hull which is pierced below the gunwales allowing horizontal beams to protrude through the hull to affix rigging of oar and pontoon outriggers; and of 34"
beam with fore and aft built in anchor system including anchor line through a slide on the deck plate; a configuration that has all the operational rigging which is attached to the main hull (except the bow anchor line) located in the stern half of the craft; and having 2 distinct operating positions: a) rowing and operating anchor reels, facing the stern; and b) fishing from a standing or sitting position, facing the bow, the 2 operating positions separated by a swivel-mounted raised seat in the approximate middle of the main hull; and the main hull containing 2 side-mounted anchor line reels held in place by a quick-release toggle adjacent a seat in the amidships portion of the watercraft such that a user of the watercraft may raise, lower, or adjust the respective anchors without having to leave the amidships portion of the craft.
14. a 7.5' wide trimaran stance with a central streamlined main hull which is pierced below the gunwales allowing horizontal beams to protrude through the hull to affix rigging of oar and pontoon outriggers; and of 34"
beam with fore and aft built in anchor system including anchor line through a slide on the deck plate; a configuration that has all the operational rigging which is attached to the main hull (except the bow anchor line) located in the stern half of the craft; and having 2 distinct operating positions: a) rowing and operating anchor reels, facing the stern; and b) fishing from a standing or sitting position, facing the bow, the 2 operating positions separated by a swivel-mounted raised seat in the approximate middle of the main hull; and the main hull containing 2 side-mounted anchor line reels held in place by a quick-release toggle adjacent a seat in the amidships portion of the watercraft such that a user of the watercraft may raise, lower, or adjust the respective anchors without having to leave the amidships portion of the craft; and having an anchor line guide system on the bow and stern hull points that employs no moving parts at the juncture where the line must change direction from horizontal to vertical;
and a horizontal sculpted foam rod holding system.
CA2988422A 2017-12-11 2017-12-12 A trimaran single-person flat water fishing craft comprising dual operating stations and a double anchoring system Abandoned CA2988422A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762597087P 2017-12-11 2017-12-11
US62597087 2017-12-11

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CA2988422A1 true CA2988422A1 (en) 2019-06-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110598338A (en) * 2019-09-17 2019-12-20 西北工业大学 Dynamic response calculation method of herringbone gear system under basic swing condition
CN114013591A (en) * 2021-11-24 2022-02-08 应急管理部国家自然灾害防治研究院 Floating and stabilizing device for Spar single-column floating foundation structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110598338A (en) * 2019-09-17 2019-12-20 西北工业大学 Dynamic response calculation method of herringbone gear system under basic swing condition
CN114013591A (en) * 2021-11-24 2022-02-08 应急管理部国家自然灾害防治研究院 Floating and stabilizing device for Spar single-column floating foundation structure

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