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WO2014070125A1 - Navire à ponton immergé - Google Patents

Navire à ponton immergé Download PDF

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Publication number
WO2014070125A1
WO2014070125A1 PCT/UA2013/000064 UA2013000064W WO2014070125A1 WO 2014070125 A1 WO2014070125 A1 WO 2014070125A1 UA 2013000064 W UA2013000064 W UA 2013000064W WO 2014070125 A1 WO2014070125 A1 WO 2014070125A1
Authority
WO
WIPO (PCT)
Prior art keywords
vessel
pontoon
water
water part
waterline
Prior art date
Application number
PCT/UA2013/000064
Other languages
English (en)
Inventor
Oleg K. RESHETAR
Original Assignee
Reshetar Oleg K
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from UAA201302437A external-priority patent/UA107979C2/ru
Application filed by Reshetar Oleg K filed Critical Reshetar Oleg K
Publication of WO2014070125A1 publication Critical patent/WO2014070125A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B2001/044—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull with a small waterline area compared to total displacement, e.g. of semi-submersible type

Definitions

  • the present invention relates to the boat building, in particular to monohull vessels with a small waterline area which are useful preferably as small vessels for recreational, traveling and commercial voyages.
  • a small vessel is up to 20 meters long and carries up to 12 persons.
  • Such a monohull vessel has a wide entire hull with a sufficiently large waterline area.
  • the hull is partly submersed in the water, and the submersed part creates a lift force which supports the vessel on the water surface.
  • a vessel moving through a body of water displaces the water by pushing it aside with its bow. In that motion the body of water, on passing along the hull, fills an emptied volume behind the stern of the vessel. In such a way, the moving vessel involves particles of the water in a vibratory motion which due to the elastic properties of the water surface propagates in the form of waves.
  • the moving vessel forms the bow divergent waves, stern divergent waves and stern transverse waves , all of which together form a powerful wave system.
  • the pattern of interaction between the bow waves and the stern waves varies.
  • the vessel's engine spends up to 30 - 45% of its power for such a wave formation.
  • Such vessels realize the so called “reversal effect", that is decreasing the wave resistance at the expense of re moval o f the water displacement volumes from the surface water body.
  • Such vessels comprise more than one (preferably two) submersed pontoon parts under water surface and an upper platform above the water surface, where the last is bound to the pontoon parts through longitudinal supports which divide the vessel into an above-water part and an under-water part that are not bound with each other.
  • a vessel in fact is a multihull vessel, and in most cases - the three-hull vessel which comprises two underwater parts and one above-water part.
  • the lift force of such a vessel is provided by the under-water part, and its waterline passes across the supports and has a small waterline area.
  • the object of the present invention is aimed at the creation of a vessel which due to its constructive features would reduce the wave formation and at the same time would provide sufficiently large useful area inside the vessel, and additionally would be able to assure a stability and a reduction of the resistance to the movement of such vessels with various propeller types.
  • a vessel which comprises a hull that includes an above-water part consisting of a bottom and walls forming an internal space of the above-water part, and a pontoon part positioned under the above-water part, as well as a ballast system, where according to the invention the pontoon part is arranged in the central portion of the bottom along the longitudinal axis of the vessel and is bound with the bottom, the internal space of the pontoon part being communicated with the internal space of the above-water part, and the common room of the pontoon part being such that the waterline of the vessel passes along the pontoon part near the bottom of the above-water part.
  • the pontoon part can in the cross section of the central portion have substantially a form of a rectangle with rounded angles in the lower portion, where the long walls of this rectangle are directed perpendicularly to the longitudinal axis of the vessel, and the width/length relation of the rectangle is selected in the range of from about 0,4 - 0,5.
  • the space of the pontoon part to make so that the waterline of the vessel distances from the bottom in the range of from about 0,5 - 0, 10 of the length of said rectangle.
  • the pontoon part is desirable to make in a rounded form.
  • the bottom of the vessel could be made in such a way that the cross section of the above-water part be flat and parallel to the waterline, and the portion of its connection with walls have a rounded form.
  • the bottom of the above-water part in the cross section be made with a slope relative to the waterline, providing a V- form cross section of the above-water part, the bottom be made with a slope to the stern of the vessel, and the portion of the connection on the bottom with the walls have a rounded form.
  • ballast system in such a vessel to arrange in the pontoon part.
  • Fig. 1 is a general side view of a vessel with a flat bottom
  • Fig. 2 is a plan view of the vessel
  • Fig. 3 is a cross section view of the vessel with a flat bottom
  • Fig. 5 is a view of the vessel equipped with an engine propeller
  • Fig. 6 is a cross section view of the vessel of the Fig. 5 with a V-form bottom
  • Fig . 7 is a view of the vessel in a mooring state with the pontoon part filled with the ballast water
  • Fig. 8 is a cross section view of the vessel with the pontoon part in a rounded form. Best mode for carrying out of the invention
  • the vessel of the invention comprises an above-water part 1 which consists of a bottom 2 with a slit 4 along the longitudinal axis 3 of the vessel, and walls 5 forming an internal space 6 of the above-water part 1.
  • the vessel comprises a pontoon part 7 which is arranged in the central portion of the bottom 2 along the longitudinal axis 3 of the vessel and is integrally bound with the bottom 2 along the edges of the slit 4.
  • the internal space 8 on the pontoon part 7 communicates with the internal space 6 of the above-water part 1 , thus creating a common internal operating room of the vessel where required equipment, essentials and the like are kept.
  • the pontoon part 7 (Fig. 2) comprises a central portion 11 , bow portion 12 and stern portion 13.
  • the bow portion 12 and the stern portion 13 are sharp-pointed, while the central portion 11 has a rectangular form, wherein the cross section (Fig. 3) of the central portion 1 1 the pontoon part 7 has substantially the form of a rectangle with rounded angles 14 in the lower portion.
  • the long sides 15 of this rectangle are positioned perpendicularly to the longitudinal axis 3 of the vessel; to increase stability of the vessel, the width B/length A relation of the rectangle may be selected in the range of from 0,4 - 0,5.
  • the waterline 10 of the vessel should lie at the distance D from the bottom, which amounts to approximately 0,05 - 0,10 of the length A of the rectangle.
  • the central portion 11 of the pontoon part 7 in the cross section is made preferably in the rounded form, for instance in the form of a ring bound from above with the edges of the slit 4 in the bottom 2. That is, as a matter of fact the pontoon part 7 on the outside has a form of a tube sharp-pointed at the bow and stern portions. Having such a form, the pontoon part 7, when its volume is equal to a corresponding volume of the variant with a rectangular cross section, has a smaller external wetted surface, due to which the vessel requires a less powered propeller for its motion.
  • the bottom 2 of the above-water part 1 of the vessel in the cross section of the above-water part 1 (Fig. 3) is rectilinear and parallel to the waterline, while the portion 16 of its communication with the walls 5 is made in the rounded form.
  • the bottom 2 in the cross section of the above-water part 1 is made positioned with an inclination relative to the waterline 10 of the vessel, thus providing a V-form of the cross section of the bottom 2 of the above-water part 1 .
  • the angle of inclination a is limited by the interval from 18° - 20°.
  • the bottom 2 is carried out with an inclination (the angle ⁇ which amounts approximately to 5° - 10° ) relative to the stern of the vessel.
  • the pontoon part 7 Before going out into a wide water area taking into consideration the load of the vessel and the presence of the waves on the water surface, the pontoon part 7 is filled with the water 8 or other ballast by means of the ballast system 17 or kept unloaded so that the waterline of the vessel on the upper portion of the pontoon part 7 under the bottom would be at the level described above, and then begin a movement through the water.
  • the rounded angles of the joints of the bottom 2 with walls 5 of the above-water part 1 and the rounded angles of the sides of the pontoon part 7 decreases the so called “wetted surface" of the vessel and the wave formation at contacting with water, thus lowering a required power of the propeller.
  • the vessel can be equipped with both the wind and screw propellers (not shown). It is understood that with a wind propeller, heeling of the moving vessel should be greater because of the increased heeling moment created by the soil system, and as a result the vessel will touch sometimes the water with its edges (Fig. 4) to insure stability of its position.
  • the bottom 2 should be made inclined relative to the waterline 10, using a V-shape cross section (Fig. 6) of the above-water part 1. Besides, taking into account such cases, the bottom 2 (Fig. 5) should be made inclined relative to the stern in the longitudinal direction of the vessel to insure so called "glide effect" which enables to reduce resistance to the movement of the vessel.
  • the lower portion of the pontoon part 7 (Fig. 7) is filled by means of the ballast system 17 until the bottom 2 lies on the water surface. 4
  • the offered design of the small vessel according to the invention allows to reduce a wave formation and at the same time provides a sufficiently large useful area inside the vessel. Additionally to this, depending on the used types of the propellers, the proposed optimal embodiments of the invention enable to insure stability and to reduce resistance to the movement of the vessel.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention concerne des navires de petites dimensions destinés à être utilisés pour les loisirs, pour des voyages et à des fins commerciales. Le navire comprend une coque qui comporte une partie émergée (1) composée du fond (2) et des parois (3) formant un espace interne (6) de la partie émergée (1) et une partie de ponton (7) positionnée sous la partie émergée (1) et un système de lest (17). La partie de ponton (7) est agencée dans la partie centrale (11) du fond (2) le long de l'axe longitudinal (3) du navire et est collée au fond (2), l'espace interne (8) de la partie (7) communiquant avec l'espace interne (6) de la partie (1), et une chambre commune (9) de la partie de ponton (7) étant telle que la ligne de flottaison (10) traverse la partie (7) proche du fond (2) de la partie émergée (1). Le navire selon l'invention permet de réduire une formation de vague et de fournir une zone suffisamment grande à l'intérieur du navire.
PCT/UA2013/000064 2012-10-29 2013-06-18 Navire à ponton immergé WO2014070125A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
UAA201212295 2012-10-29
UA2012012295 2012-10-29
UAA201302437 2013-02-26
UAA201302437A UA107979C2 (en) 2013-02-26 2013-02-26 Vessel

Publications (1)

Publication Number Publication Date
WO2014070125A1 true WO2014070125A1 (fr) 2014-05-08

Family

ID=48795891

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/UA2013/000064 WO2014070125A1 (fr) 2012-10-29 2013-06-18 Navire à ponton immergé

Country Status (1)

Country Link
WO (1) WO2014070125A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US234794A (en) * 1880-11-23 lundborg
US3063397A (en) * 1959-08-27 1962-11-13 Jr Harold Boericke Sub-surface craft
US3447502A (en) 1967-07-14 1969-06-03 Litton Systems Inc Marine vessel
US3995575A (en) * 1972-08-10 1976-12-07 Jones Jr Allen Semidisplacement hydrofoil ship
US4372240A (en) * 1980-07-23 1983-02-08 Michael Farid Y Surface ship having improved speed and maneuverability
EP0335345A2 (fr) * 1988-03-28 1989-10-04 Swath Ocean Europe Limited Construction d'une coque de bateau catamaran à surface d'eau minimale
US5301624A (en) * 1993-02-24 1994-04-12 Swath Ocean Systems, Inc. Stern planes for swath vessel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US234794A (en) * 1880-11-23 lundborg
US3063397A (en) * 1959-08-27 1962-11-13 Jr Harold Boericke Sub-surface craft
US3447502A (en) 1967-07-14 1969-06-03 Litton Systems Inc Marine vessel
US3995575A (en) * 1972-08-10 1976-12-07 Jones Jr Allen Semidisplacement hydrofoil ship
US4372240A (en) * 1980-07-23 1983-02-08 Michael Farid Y Surface ship having improved speed and maneuverability
EP0335345A2 (fr) * 1988-03-28 1989-10-04 Swath Ocean Europe Limited Construction d'une coque de bateau catamaran à surface d'eau minimale
US5301624A (en) * 1993-02-24 1994-04-12 Swath Ocean Systems, Inc. Stern planes for swath vessel

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