EP0134767A1 - Forme de carène - Google Patents

Forme de carène Download PDF

Info

Publication number
EP0134767A1
EP0134767A1 EP84850227A EP84850227A EP0134767A1 EP 0134767 A1 EP0134767 A1 EP 0134767A1 EP 84850227 A EP84850227 A EP 84850227A EP 84850227 A EP84850227 A EP 84850227A EP 0134767 A1 EP0134767 A1 EP 0134767A1
Authority
EP
European Patent Office
Prior art keywords
hull
dwl
waterline
design waterline
plane
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP84850227A
Other languages
German (de)
English (en)
Other versions
EP0134767B1 (fr
Inventor
Roar Ramde
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP0134767A1 publication Critical patent/EP0134767A1/fr
Application granted granted Critical
Publication of EP0134767B1 publication Critical patent/EP0134767B1/fr
Expired legal-status Critical Current

Links

Images

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
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • 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
    • B63B1/06—Shape of fore part
    • B63B2001/066—Substantially vertical stems

Definitions

  • the invention relates to a displacement-type hull configuratic which makes it possible to improve a vessel's deadweight tonnage, transverse stability, navigational and sailing properties and to reduce stresses on the hull beam whether the vessel is sailing in quiet water or into the waves.
  • conventional hull configurations can obtain greater deadweight tonnage by increasing the roundness of the underwater portion of the hull, thereby increasing the total displacement.
  • the breadth of the hull can be increased to obtain a greater moment of inertia at the waterline, optionally also raising the volumetric center of gravity of the underwater hull.
  • the deadweight tonnage, transverse stability, seagoing properties and the magnitude of tolerable bending and shear stresses on the hull beam can all be improved without incurring the above drawbacks.
  • the invention permits the hull to be made with rounder lines than conventional hull configurations, expressed by the term for leanness of line L/V1/3, where L is the length of the hull at the design waterline corresponding to the depth T to the summer freeboard and V is the displacement volume of the hull at the design waterline, and where L/V 1/3 can be about 3 or greater than 3 without increasing the specific resistance to propulsion compared to conventional hull configurations, while at the same time the hull breadth B can be increased such that the L/B ratio can be about 2 or greater than 2, where B is the maximum breadth of the hull at the design waterline, whereby the height of the metacenter of the hull can be more than doubled in relation to conventional hull configurations of the same length.
  • the seagoing properties of the hull configuration of the invention are improved, such that the hull's pitching and heaving movements are reduced compared to the movements of conventional hulls traveling at the same rate of speed, and these movements are also retarded such that the improved hull does not exhibit correspondingly large movements until the wave length/hull length ratio is more than twice as large, while at the same time the improved hull's resistance to propulsion is reduced to a similar degree.
  • the displacement distribution in the longitudinal direction approximates a Rayleigh wave which with normal distribution of cargo will result in a reduction of the longitudinal moment of bending on the hull beam of around 50% compared to conventional hulls.
  • the hull configuration according to the invention must be formed with squarely cut off, approximately harmonic sinusoidal waterlines (dwl, 1,2, 3) with extremity points at the ends of the hull fore and aft, while at the same time the base lines of the waterlines (Odwl, 01,02,03) from the design waterline (dwl) and at increasing depths from this, gradually are displaced in the direction of forward propulsion and shortened so that an approximately oblique plane (s), straight or approximately sinusoidal in longitudinal cross section and with extremity points around L/2 and at the hull's stern end, forms a wide, elevated surface (s) which comprises the stern half of the hull, and which thus permits utilization of a propulsion system characteristic for this hull configuration consisting of a support plane (dwl, 1,2, 3) with extrem
  • a transverse section through the hull configuration below the design waterline (dwl) at a distance of about 0.15 L from the stern will have a ratio between the breadth (B 1 ) at the design waterline and the depth (t l ) of the hull measured from the same waterline which will be about 3 or greater than the corresponding ratio for a section at L/2 where the breadth (B 2 ) and depth (t 2 ) are measured in the same way.
  • the design waterline's areal center of gravity (LCF) will be located around 0.2 L aft of L/ 2 and the improved hull's volumetric center of gravity (buoyancy) (LCB) at the depth of the design waterline (dwl) around 0.075 L forward of the areal center of gravity, which may be expressed as LCF - LCB ⁇ 0.075 L.
  • the hull configuration according to the invention can in the region from the stern post and forward to about 0.3 L be provided with turbulence-controlling appendages which may consist of fixed or flexible fin-like means (v) in the streamline direction mounted approximately perpendicular relative to the hull and located approximately at the transition between the bottom and sides of the hull, or as longitudinal grooves in the form of pointed, rectangular or wave-like grooves (x) which decrease in depth in the direction of forward propulsion and which at about 0.3 L terminate in and coincide with the even portion of the oblique plane (s) and whose depth (d) will usually be about 0.02 B.
  • turbulence-controlling appendages may consist of fixed or flexible fin-like means (v) in the streamline direction mounted approximately perpendicular relative to the hull and located approximately at the transition between the bottom and sides of the hull, or as longitudinal grooves in the form of pointed, rectangular or wave-like grooves (x) which decrease in depth in the direction of forward propulsion and which at about 0.3 L terminate in and coincide with
  • Figure 1 shows the improved hull configuration's squarely cut off, approximately harmonic sinusoidal waterlines around the design waterline (dwl) with extremity points around the hull's bow and stern ends, with the areal center of gravity (LCF) about 0.2 L astern of L/2 and where the length/breadth ratio L/B of the design waterline is shown as being about 2.
  • LCF areal center of gravity
  • Figure 2 shows the improved hull below the design waterline (dwl) in vertical section, where it may be seen that the base lines of the squarely cut off, approximately harmonic sinusoidal waterlines (Odwl, 0 1 ,0 2 ,0 3 ) along the oblique plane (s), which are displaced in the direction of forward propulsion of the vessel,coincide with the base plane (g) at about L/2, and the distance between the areal center of gravity (LCF) and the buoyancy center of gravity (LCB) of the hull at the depth of the design waterline (dwl) is about 0.075 L.
  • Figure 3 shows the improved hull configuration of Figure 2 in horizontal projection with the waterlines dwl, 1,2,3 and g, in this example with a U-frame at the bow end of the hull, but other known frame forms can also be utilized, as required.
  • Figure 3 also shows the characteristic ratio between breadth and depth for a section around 0.1 L from the stern and at L/2, where the respective breadths and depths are designated B 1 and B 2 and t l and t 2 .
  • Figure 4 shows a vertical section near the center plane in the hull's aft-section with the base plane (g), oblique plane (s), support (q), support plane (p), horizontal rudder (h), propulsion units (f) and vertical rudder (r), in this case shown with the propulsion unit (f) positioned in front of and underneath the support plane (p), but the thrusters can also be mounted at the aft end or above the support plane.
  • Figure 5 shows a section parallel to and below the oblique plane (s), support plane (p), supports (q), horizontal rudders (h), the overlying contour of the design waterline (dwl) and the propulsion units (f), in this example four in number and mounted at the forward edge of the support plane.
  • Figure 6 shows the improved hull configuration's design waterline (dwl).
  • dwl design waterline
  • v fin-like appendages mounted in connection with the oblique plane
  • x groove-patterned portion of the oblique plane
  • the line A-A in Figure 6 is a transverse section through the stern portion of the oblique plane (s), shown again in Figure 7 with turbulence-controlling, fixed or flexible appendages (v) on the left-hand side of the figure and an example of longitudinally oriented grooves or ridges (x) on the right-hand side, showing the approximate depth (d) of the grooves in relation to the oblique plane (s).

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)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP84850227A 1983-07-19 1984-07-18 Forme de carène Expired EP0134767B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NO832617 1983-07-19
NO832617 1983-07-19
NO840609 1984-02-20
NO84840609A NO153560C (no) 1983-07-19 1984-02-20 Skrogform.

Publications (2)

Publication Number Publication Date
EP0134767A1 true EP0134767A1 (fr) 1985-03-20
EP0134767B1 EP0134767B1 (fr) 1987-03-25

Family

ID=26647852

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84850227A Expired EP0134767B1 (fr) 1983-07-19 1984-07-18 Forme de carène

Country Status (8)

Country Link
EP (1) EP0134767B1 (fr)
KR (1) KR850001104A (fr)
DE (1) DE3462769D1 (fr)
DK (1) DK160471C (fr)
ES (1) ES8505599A1 (fr)
FI (1) FI78650C (fr)
GR (1) GR82096B (fr)
NO (1) NO153560C (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0678445A1 (fr) * 1994-04-21 1995-10-25 Petroleum Geo-Services Ag Forme de carène
WO1997024255A1 (fr) * 1995-12-27 1997-07-10 Petroleum Geo-Services A.S Angle de plan oblique et nombre de froude pour coque a lignes de flottaison sinusoidales
WO1997024256A1 (fr) * 1995-12-27 1997-07-10 Petroleum Geo-Services A.S Configuration de coque a ligne de flottaison sinusoidale avec courbe d'etambot
WO1997024254A1 (fr) * 1995-12-27 1997-07-10 Petroleum Geo-Services A.S Configuration d'helice pour navires a ligne de flottaison sinusoidale
WO1997024253A1 (fr) * 1995-12-27 1997-07-10 Petroleum Geo-Services A/S Configuration de coque a ligne de flottaison sinusoidale avec soufflage
WO1997029940A1 (fr) * 1996-02-16 1997-08-21 Petroleum Geo-Services A.S Navire de production ayant une coque a ligne de flottaison sinusoidale
WO2000007872A1 (fr) * 1998-07-21 2000-02-17 Petroleum Geo-Services As Forme de coque 1
AU717548B2 (en) * 1994-04-21 2000-03-30 Roar Ramde Hull configuration
WO2005012075A1 (fr) * 2003-08-01 2005-02-10 Rolls-Royce Marine As Dispositif pour augmenter la stabilite en lacet d'un navire
RU2493039C1 (ru) * 2012-02-02 2013-09-20 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Надводное однокорпусное водоизмещающее быстроходное судно

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011097686A1 (fr) * 2010-02-11 2011-08-18 Austal Ships Pty Ltd Coque effilée
CN105416505B (zh) * 2015-12-09 2018-01-16 中远船务工程集团有限公司 弓箭型水线的低阻穿浪船艏

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE103483C (fr) *
FR26082E (fr) * 1922-01-10 1923-07-30 Forme nouvelle diminuant la résistance à l'avancement qu'éprouvent par suite de l'inertie du milieu environnant les corps solides se déplaçant dans l'air ou dans l'eau
FR719740A (fr) * 1928-05-07 1932-02-09 Nouvelle forme de carène à moindre résistance
FR1236622A (fr) * 1959-06-11 1960-11-18 Forme de carène

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE103483C (fr) *
FR26082E (fr) * 1922-01-10 1923-07-30 Forme nouvelle diminuant la résistance à l'avancement qu'éprouvent par suite de l'inertie du milieu environnant les corps solides se déplaçant dans l'air ou dans l'eau
FR719740A (fr) * 1928-05-07 1932-02-09 Nouvelle forme de carène à moindre résistance
FR1236622A (fr) * 1959-06-11 1960-11-18 Forme de carène

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
THE MOTOR SHIP, vol. 48, November 1967, pages 361-362, London, GB; "Design concepts of the inland sea passenger vessel "Ivory Maru"" *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1050102C (zh) * 1994-04-21 2000-03-08 罗尔·拉姆德 船体结构
EP0678445A1 (fr) * 1994-04-21 1995-10-25 Petroleum Geo-Services Ag Forme de carène
US5711239A (en) * 1994-04-21 1998-01-27 Petroleum Geo-Services As Propeller configuration for sinusoidal waterline ships
AU717548B2 (en) * 1994-04-21 2000-03-30 Roar Ramde Hull configuration
AU693858B2 (en) * 1994-04-21 1998-07-09 Roar Ramde Hull configuration
US5598802A (en) * 1994-04-21 1997-02-04 Ramde; Roar R. Hull configuration
WO1997024253A1 (fr) * 1995-12-27 1997-07-10 Petroleum Geo-Services A/S Configuration de coque a ligne de flottaison sinusoidale avec soufflage
WO1997024255A1 (fr) * 1995-12-27 1997-07-10 Petroleum Geo-Services A.S Angle de plan oblique et nombre de froude pour coque a lignes de flottaison sinusoidales
WO1997024254A1 (fr) * 1995-12-27 1997-07-10 Petroleum Geo-Services A.S Configuration d'helice pour navires a ligne de flottaison sinusoidale
WO1997024256A1 (fr) * 1995-12-27 1997-07-10 Petroleum Geo-Services A.S Configuration de coque a ligne de flottaison sinusoidale avec courbe d'etambot
GB2324277A (en) * 1996-02-16 1998-10-21 Petroleum Geo Services As Production vessel with sinusoidal waterline hull
US5701835A (en) * 1996-02-16 1997-12-30 Petroleum Geo-Services As Production vessel with sinusoidal waterline hull
WO1997029940A1 (fr) * 1996-02-16 1997-08-21 Petroleum Geo-Services A.S Navire de production ayant une coque a ligne de flottaison sinusoidale
GB2324277B (en) * 1996-02-16 2000-11-01 Petroleum Geo Services As Production vessel with sinusoidal waterline hull
WO2000007872A1 (fr) * 1998-07-21 2000-02-17 Petroleum Geo-Services As Forme de coque 1
WO2005012075A1 (fr) * 2003-08-01 2005-02-10 Rolls-Royce Marine As Dispositif pour augmenter la stabilite en lacet d'un navire
RU2493039C1 (ru) * 2012-02-02 2013-09-20 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Надводное однокорпусное водоизмещающее быстроходное судно

Also Published As

Publication number Publication date
GR82096B (fr) 1984-12-13
DK160471B (da) 1991-03-18
NO840609L (no) 1985-01-21
EP0134767B1 (fr) 1987-03-25
NO153560B (no) 1986-01-06
NO153560C (no) 1986-04-16
FI78650B (fi) 1989-05-31
ES534423A0 (es) 1985-06-01
DK160471C (da) 1991-08-26
FI842794A (fi) 1985-01-20
KR850001104A (ko) 1985-03-16
FI78650C (fi) 1989-09-11
DE3462769D1 (en) 1987-04-30
ES8505599A1 (es) 1985-06-01
FI842794A0 (fi) 1984-07-11
DK352584D0 (da) 1984-07-18
DK352584A (da) 1985-01-20

Similar Documents

Publication Publication Date Title
EP0678445B1 (fr) Forme de carène
US5184561A (en) Planing pontoon boat
EP0335345B1 (fr) Construction d'une coque de bateau catamaran à surface d'eau minimale
GB2121731A (en) Catamaran with hydrofoils
RU2150401C1 (ru) Глиссер
EP0134767B1 (fr) Forme de carène
US5711239A (en) Propeller configuration for sinusoidal waterline ships
KR100806227B1 (ko) 저 항력 수중 비대칭 배수 양력체, 이를 포함한 선박 및 선박의 선체
US5794558A (en) Mid foil SWAS
US7617793B2 (en) Vessel provided with a foil situated below the waterline
JPH01503133A (ja) 流体力学的性能が良い船
US5701835A (en) Production vessel with sinusoidal waterline hull
CA2069751C (fr) Coque de bateau
EP0719225A1 (fr) Coque de bateau
US3495563A (en) Seaworthy hydroplanes
WO2000007872A1 (fr) Forme de coque 1
WO1997024256A1 (fr) Configuration de coque a ligne de flottaison sinusoidale avec courbe d'etambot
KR100405197B1 (ko) 동체구조
AU717548B2 (en) Hull configuration
EP0483948B1 (fr) Catamaran
EP0873934A2 (fr) Bateau avec une coque supportée par des flotteurs ellipsoidaux complètement submergés
JP2006168692A (ja) 船尾曳波軽減装置およびこれを装備した双胴船
WO1997024253A1 (fr) Configuration de coque a ligne de flottaison sinusoidale avec soufflage
NZ314874A (en) Hull configuration comprises a "ramform" type with side hull bulges, stabilizing fins, a propeller or slope surface with froude number between 0.1 and 0.35
RU2172271C1 (ru) Быстроходное судно

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19850919

17Q First examination report despatched

Effective date: 19860616

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT NL SE

REF Corresponds to:

Ref document number: 3462769

Country of ref document: DE

Date of ref document: 19870430

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 84850227.4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010705

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010711

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010716

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20010719

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010725

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010731

Year of fee payment: 18

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

BERE Be: lapsed

Owner name: *RAMDE ROAR

Effective date: 20020731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030201

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030201

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20030201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST