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DE805011C - Double hull ship for shallow water - Google Patents

Double hull ship for shallow water

Info

Publication number
DE805011C
DE805011C DEP51411A DEP0051411A DE805011C DE 805011 C DE805011 C DE 805011C DE P51411 A DEP51411 A DE P51411A DE P0051411 A DEP0051411 A DE P0051411A DE 805011 C DE805011 C DE 805011C
Authority
DE
Germany
Prior art keywords
ship
shallow water
double hull
underwater
hull ship
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.)
Expired
Application number
DEP51411A
Other languages
German (de)
Inventor
Kurt Helm
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
Priority to DEP51411A priority Critical patent/DE805011C/en
Application granted granted Critical
Publication of DE805011C publication Critical patent/DE805011C/en
Expired legal-status Critical Current

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
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly

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)

Description

Beim Entwurf von Fluß-Fahrgastschiffen hat es sich gezeigt, daß der Flachwasserwiderstand außerordentlich stark durch den Schiffstiefgang beeinflußt wird. Andererseits nimmt der Reibungs-, Form- und Wellenwiderstand mit der Breite des Schiffes zu. Teilt man dagegen das Unterwasser-. schiff in zwei schmale, in einem endlichen Abstand nebeneinander angeordnete Unterwasserschiffe auf, so vermindert man erstens den Flachwasserwiderstand und zweitens den Form- und Wellenwiderstand. Dieser Vorteil ist so groß, daß er die nicht zu vermeidende Erhöhung des Reibungswiderstandes weitaus überwiegt.In the design of river passenger ships, it has been shown that the Shallow water resistance extremely strongly influenced by the ship's draft will. On the other hand, the friction, shape and wave resistance increases with width of the ship. If, on the other hand, one divides the underwater. ship in two narrow ones, in underwater ships arranged next to one another at a finite distance, so reduced firstly the shallow water resistance and secondly the form and wave resistance. This advantage is so great that it causes the unavoidable increase in frictional resistance far outweighs.

Die Zeichnung zeigt ein normales Einrumpfschiff und ein symmetrisch ausgeführtes Doppelrumpfschiff in drei Ansichten sowie eine Draufsicht auf ein Doppelrumpfschiff mit asymmetrischen Rümpfen.The drawing shows a normal monohull and a symmetrical one Executed double hull ship in three views and a top view of a double hull ship with asymmetrical hulls.

Die vorgeschlagene Schiffsform hat gerade bei den Schiffen, die kurz unterhalb der kritischen Geschwindigkeit fahren, eine besondere Bedeutung, da es mit der vorgeschlagenen Maßnahme gelingt, das Widerstandsmaximum im Bereich der kritischeh Geschwindigkeit so weit zu vermindern, daß die Stauwelle ohne Leistungssteigerung überschritten werden kann. Hierdurch sind Geschwindigkeitssteigerungen bis zu 30 % möglich, wie aus dem Diagramm hervorgeht.The proposed shape of the ship is short for the ships Driving below the critical speed is of particular importance as it with the proposed measure succeeds in the resistance maximum in the area of Critical speed to reduce so far that the congestion wave without an increase in performance can be exceeded. This increases the speed by up to 30 % possible, as can be seen from the diagram.

Claims (2)

PATENTANSPRÜCHE: i. Doppelrumpfschiff für flaches Wasser, dadurch gekennzeichnet, daß der Unterwasserteil des Schiffskörpers in zwei schmale Unterwasserteile aufgeteilt ist, die so angeordnet sind, daß der Wellenwiderstand im überkritischen Bereich der Flachwasserfahrt im Vergleich zum Einrumpfschiff in erheblichem Maße reduziert wird. PATENT CLAIMS: i. Double-hulled ship for shallow water, characterized in that the underwater part of the hull is divided into two narrow underwater parts which are arranged so that the wave resistance in the supercritical area of shallow water travel is considerably reduced compared to the monohulled ship. 2. Doppelrumpfschiff nach Anspruch i, dadurch gekennzeichnet, daß die Wasserlinien der beiden Unterwasserteile asymmetrisch gestaltet sind, um in Anpassung an Fahrtverhältnisse und jeweiligen Abstand der beiden Unterwasserteile die beste Wirkung zu erreichen.2. double hull ship according to claim i, characterized in that the water lines of the two underwater parts are designed asymmetrically to allow in Adaptation to driving conditions and the respective distance between the two underwater parts to achieve the best effect.
DEP51411A 1949-08-09 1949-08-09 Double hull ship for shallow water Expired DE805011C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP51411A DE805011C (en) 1949-08-09 1949-08-09 Double hull ship for shallow water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP51411A DE805011C (en) 1949-08-09 1949-08-09 Double hull ship for shallow water

Publications (1)

Publication Number Publication Date
DE805011C true DE805011C (en) 1951-05-04

Family

ID=7385071

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP51411A Expired DE805011C (en) 1949-08-09 1949-08-09 Double hull ship for shallow water

Country Status (1)

Country Link
DE (1) DE805011C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1182979B (en) * 1961-09-29 1964-12-03 Aerazur Constr Aeronaut Hull for a motorboat
US4002132A (en) * 1974-06-04 1977-01-11 Aktiengesellschaft "Weser" Catamaran with plural drives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1182979B (en) * 1961-09-29 1964-12-03 Aerazur Constr Aeronaut Hull for a motorboat
US4002132A (en) * 1974-06-04 1977-01-11 Aktiengesellschaft "Weser" Catamaran with plural drives

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