EP0062556A1 - Transport vessel with two load compartments - Google Patents

Transport vessel with two load compartments Download PDF

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Publication number
EP0062556A1
EP0062556A1 EP82400499A EP82400499A EP0062556A1 EP 0062556 A1 EP0062556 A1 EP 0062556A1 EP 82400499 A EP82400499 A EP 82400499A EP 82400499 A EP82400499 A EP 82400499A EP 0062556 A1 EP0062556 A1 EP 0062556A1
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Prior art keywords
ship
transport
transport vessel
breach
equal
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EP82400499A
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German (de)
French (fr)
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EP0062556B1 (en
Inventor
Guy Bonnafous
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Nouvelle Technigaz SA
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Technigaz
Nouvelle Technigaz SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00—Interior subdivision of hulls
    • B63B11/02—Arrangement of bulkheads, e.g. defining cargo spaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed

Definitions

  • the present invention relates and essentially relates to a structure of a transport ship with two cargo holds, in particular a transport vessel of liquefied petroleum gas of small and medium capacity.
  • the main purpose of the invention is to provide this ship with a capacity for survival in the event of damage, in accordance with the international regulations in force (code of the Intergovernmental Maritime Consultative Organization, OMCI).
  • the invention provides a transport vessel with two loading holds, in particular for the transport of liquefied petroleum gas, characterized in that the two loading holds are separated by an intermediate space defined between two transverse watertight partitions delimiting these two cargo holds respectively, these two watertight bulkheads being separated by a distance at least equal to the conventional length of breach in the ship, defined by international regulations.
  • the aforementioned intermediate space is also delimited by two longitudinal watertight partitions placed symmetrically with respect to the vertical, median and longitudinal plane of the ship, each of these partitions being respectively at a distance from the ship's side plating at least equal to the conventional transverse extent of breach in the ship defined by international regulations.
  • the intermediate space thus defined is arranged in a cargo hold, preferably in a fuel bunker and / or in a ballast tank, or the like.
  • a medium-capacity transport vessel (for example less than 15,000 or 20,000 m 3 ) comprises in a known manner a compartment 1 of the machines aft and a section 2 before, the part center of the ship being reserved for cargo.
  • this central part of the ship is divided into two cargo holds 3, 4 separated by an intermediate space 5 defined below.
  • two self-supporting tanks 6a, 6b are arranged side by side in each loading hold 3,4, preferably of cylindrical or cylindroconical shape for the storage in particular of liquefied petroleum gas.
  • the intermediate space 5 is defined by two watertight bulkheads 7a, 7b transverse, these partitions respectively define the loading wedges 3, 4.
  • the distance 1 between these two watertight bulkheads is at least equal to the length of a breach in the ship, in the event of damage, and defined by international regulations. This length 1. c is given by the following formula: where L is the length of the ship.
  • this intermediate space 5 is advantageously delimited by two partitions 8a, 8b, watertight, longitudinally, placed symmetrically with respect to the vertical and longitudinal median plane of the ship.
  • these partitions are at a distance h from the plating of the ship at least equal to the transverse extent p of breach in a ship defined by international regulations.
  • This transverse extent p of breach is defined by the following formula: , where B is the width of the ship.
  • the intermediate space 5 defined by the watertight and transverse partitions 7a, 7b and / or the longitudinal watertight partitions 8a, 8b is arranged in a cargo hold, and preferably in a fuel bunker or a ballast tank.
  • FIG. 1 by way of example, it is possible to have a self-supporting and cylindrical tank 6c in a partially bridged position, above the bilge tanks 6b, in a manner known per se.
  • the load factor of a transport vessel according to the invention equal to about 0.38 is much higher than the load factors obtained by the other proposed solutions, which are close to 0.30-0.32 .
  • This filling coefficient corresponds, in particular for a gas transport vessel to the ratio of the useful transport capacity of the vessel (expressed in m 3 ) to the product of the three main dimensions of this vessel, namely: the length, the width and the trough (expressed in meters).

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  • 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

1. Transport ships in particular for the transport of liquefied petroleum gas, comprising a loading space and means providing for the survival capacity of the ship in case of a breach resulting in the flooding of one portion of the ship, characterized in that the said loading space comprises two holds (3, 4) longitudinally separated by an intermediate space (5) shaped to form the said survival means, in that this space comprises two transverse bulkheads (7a, 7b) for the partition of the holds, which are fluid-tight and spaced by a distance at least equal to a predetermined length of breach likely to occur upon a collision and a structure of outer longitudinal walls constituted by the longitudinal outer walls forming the plating of the ship and two inner fluid-tight longitudinal bulkheads (8a, 8b), each one of the said inner bulkheads (8a, 8b) being respectively spaced from the said plating of the ship by a distance at least equal to a predetermined depth of penetration likely to occur upon a collision.

Description

La présente invention concerne et a essentiellement pour objet une structure de navire de transport à deux cales de chargement, notamment un navire de transport de gaz de pétrole liquéfié de petite et moyenne capacité.The present invention relates and essentially relates to a structure of a transport ship with two cargo holds, in particular a transport vessel of liquefied petroleum gas of small and medium capacity.

L'invention a essentiellement pour but d'assurer à ce navire une capacité de survie, en cas d'avarie, conforme à la réglementation internationale en vigueur (code de l'Organisation Intergouvernementale Consultative de. la Navigation Maritime, OMCI).The main purpose of the invention is to provide this ship with a capacity for survival in the event of damage, in accordance with the international regulations in force (code of the Intergovernmental Maritime Consultative Organization, OMCI).

A cet effet, l'invention propose un navire de transport à deux cales de chargement, notamment pour le transport de gaz de pétrole liquéfié, caractérisé en ce que les deux cales de chargement sont séparées par un espace intermédiaire défini entre deux cloisons étanches transversales délimitant respectivement ces deux cales de chargement, ces deux cloisons étanches étant séparées par une distance au moins égale à la longueur conventionnelle de brèche dans le navire, définie par la rè- glementation internationale.To this end, the invention provides a transport vessel with two loading holds, in particular for the transport of liquefied petroleum gas, characterized in that the two loading holds are separated by an intermediate space defined between two transverse watertight partitions delimiting these two cargo holds respectively, these two watertight bulkheads being separated by a distance at least equal to the conventional length of breach in the ship, defined by international regulations.

Selon une autre caractéristique de l'invention, l'espace intermédiaire précité est également délimité par deux cloisons étanches longitudinales placées symétriquement par rapport au plan vertical.médian et longitudinal du navire, chacune de ces cloisons étant respectivement à une distance des bordés du navire au moins égale à l'étendue transversale conventionnelle de brèche dans le navire définie par la réglementation internationale.According to another characteristic of the invention, the aforementioned intermediate space is also delimited by two longitudinal watertight partitions placed symmetrically with respect to the vertical, median and longitudinal plane of the ship, each of these partitions being respectively at a distance from the ship's side plating at least equal to the conventional transverse extent of breach in the ship defined by international regulations.

Avantageusement l'espace intermédiaire ainsi défini est aménagé en cale de chargement, de préférence en soute à combustible et/ou en réservoir de ballast, ou analogue.Advantageously, the intermediate space thus defined is arranged in a cargo hold, preferably in a fuel bunker and / or in a ballast tank, or the like.

L'invention sera mieux compriseet d'autres caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple, illustrant un mode de réalisation de l'invention et dans lesquels :

  • La figure 1 est une vue schématique en cotpe longitudinale,verticale, illustrant une disposition préférée des réservoirs auto-portants dans un navire de transport à deux cales de chargement conforme à l'invention;et
  • La figure 2 est une vue schématique de dessus en coupe, illustrant la disposition des cales de chargement d'un navire de transport conforme à l'invention.
The invention will be better understood and other characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example, illustrating an embodiment. of the invention and in which:
  • FIG. 1 is a schematic view in longitudinal, vertical section, illustrating a preferred arrangement of the self-supporting tanks in a transport ship with two cargo holds according to the invention; and
  • Figure 2 is a schematic top view in section, illustrating the arrangement of the cargo holds of a transport ship according to the invention.

En se référant à la figure 2, un navire de transport de moyenne capactié (capactié par exemple inférieure à 15 000 ou 20 000 m3) comprend de manière connue un compartiment 1 des machines à l'arrière et une tranche 2 avant, la partie centrale du navire étant réservée à la cargaison.Referring to FIG. 2, a medium-capacity transport vessel (for example less than 15,000 or 20,000 m 3 ) comprises in a known manner a compartment 1 of the machines aft and a section 2 before, the part center of the ship being reserved for cargo.

Selon l'invention, cette partie centrale du navire est divisée en deux cales 3, 4 de chargement séparées par un espace intermédiaire 5 défini ci-après. Selon une réalisation préférée de l'invention, on dispose côte à côte dans chaque cale 3,4 de chargement deux réservoirs 6a, 6b, auto-portants de préférence de forme cylindrique ou cylindroconique pour le stockage notamment de gaz de pétrole liquéfié.According to the invention, this central part of the ship is divided into two cargo holds 3, 4 separated by an intermediate space 5 defined below. According to one preferred embodiment of the invention, two self-supporting tanks 6a, 6b are arranged side by side in each loading hold 3,4, preferably of cylindrical or cylindroconical shape for the storage in particular of liquefied petroleum gas.

Selon l'invention, l'espace intermédiaire 5 est défini par deux cloisons étanches 7a, 7b transversales, ces cloisons définissent respectivement les cales de chargement 3, 4.According to the invention, the intermediate space 5 is defined by two watertight bulkheads 7a, 7b transverse, these partitions respectively define the loading wedges 3, 4.

La distance 1 entre ces deux cloisons étanches est au moins égale à la longueur d'une brèche dans le navire, en cas d'avarie, et définie par la réglementation internationale. Cette longueur 1. c est donnée par la formule suivante :

Figure imgb0001
où L est la longueur du navire.The distance 1 between these two watertight bulkheads is at least equal to the length of a breach in the ship, in the event of damage, and defined by international regulations. This length 1. c is given by the following formula:
Figure imgb0001
 where L is the length of the ship.

En outre, cet espace 5 intermédiaire est avantageusement délimité par deux cloisons 8a, 8b, étanches, longitudinalement, placées symétriquement par rapport au plan médian vertical et longitudinal du navire.In addition, this intermediate space 5 is advantageously delimited by two partitions 8a, 8b, watertight, longitudinally, placed symmetrically with respect to the vertical and longitudinal median plane of the ship.

Selon l'invention, ces cloisons sont à une distance h des bordés du navire au moins égale à l'étendue transversale p de brèche dans un navire définie par la réglementation internationale. Cette étendue transversale p de brèche est définie par la formule suivante :

Figure imgb0002
, dans laquelle B est la largeur du navire.According to the invention, these partitions are at a distance h from the plating of the ship at least equal to the transverse extent p of breach in a ship defined by international regulations. This transverse extent p of breach is defined by the following formula:
Figure imgb0002
 , where B is the width of the ship.

Ainsi, dans un navire de transport à deux cales de chargement conforme à l'invention, il est impossible, selon la réglementation internationale, qu'une avarie provoque l'envahissement simultané des deux cales 3 et 4. En conséquence, le navire de l'invention a une capacité de survie conforme à la réglementation internationale.Thus, in a transport ship with two cargo holds according to the invention, it is impossible, according to international regulations, for damage causes the simultaneous invasion of the two holds 3 and 4. Consequently, the ship of the invention has a survival capacity in accordance with international regulations.

Avantageusement, l'espace 5 intermédiaire défini par les cloisons étanches et transversales 7a, 7b et/ou les cloisons étanches longitudinales 8a, 8b, est aménagé en cale de chargement, et de préférence en soute à combustible ou réservoir de ballast.Advantageously, the intermediate space 5 defined by the watertight and transverse partitions 7a, 7b and / or the longitudinal watertight partitions 8a, 8b, is arranged in a cargo hold, and preferably in a fuel bunker or a ballast tank.

Egalement, comme représenté à la figure 1, à titre d'exemple, il est possible de disposer un réservoir 6c auto-portant et cylindrique en position partiellement pontée, au-dessus des réservoirs de cale 6b, de manière connue en soi.Also, as shown in FIG. 1, by way of example, it is possible to have a self-supporting and cylindrical tank 6c in a partially bridged position, above the bilge tanks 6b, in a manner known per se.

Ainsi, la séparation de deux cales de chargement d'un navire de transport de capacité moyenne, proposée par l'invention permet, à capacité égale, par rapport aux autres solutions proposées :

  • - de réduire les dimensions du navire;
  • - d'obtenir un gain appréciable sur le poids du navire et notamment sur le poids des réservoirs auto-portants 6a, 6b, à titre d'exemple un gain de poids d'environ 15%;
  • - et en conséquence de réduire le prix de revient d'un tel navire, à titre d'exemple une réduction de l'ordre de 10% de ce prix de revient.
Thus, the separation of two cargo holds of a transport vessel of medium capacity, proposed by the invention allows, with equal capacity, compared to the other solutions proposed:
  • - to reduce the dimensions of the ship;
  • - Obtain an appreciable gain on the weight of the ship and in particular on the weight of the self-supporting tanks 6a, 6b, for example a weight gain of around 15%;
  • - and consequently to reduce the cost price of such a ship, for example a reduction of around 10% of this cost price.

De plus, le coefficient de remplissage d'un navire de transport conforme à l'invention, égal environ à 0,38 est nettement supérieur aux coefficients de remplissage obtenus par les autres solutions proposées, qui sont voisins de 0,30-0,32. Ce coefficient de remplissage correspond, notamment pour un navire de transport de gaz au rapport de la capacité utile de transport du navire (exprimée en m3) au produit des trois dimensions princi- " pales de ce navire, à savoir : la longueur, la largeur et le creux (exprimées en mètre).In addition, the load factor of a transport vessel according to the invention, equal to about 0.38 is much higher than the load factors obtained by the other proposed solutions, which are close to 0.30-0.32 . This filling coefficient corresponds, in particular for a gas transport vessel to the ratio of the useful transport capacity of the vessel (expressed in m 3 ) to the product of the three main dimensions of this vessel, namely: the length, the width and the trough (expressed in meters).

Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et représenté qui n'a été donné qu'à titre d'exemple. C'est dire que l'invention comprend tous les moyens constituant des équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont exécutées suivant son esprit et mises en oeuvre dans le cadre de la protection revendiquée.Of course, the invention is in no way limited to the embodiment described and shown which has been given only by way of example. This means that the invention includes all the means constituting technical equivalents of the means described as well as their combinations if these are carried out according to the spirit and implemented in the context of the protection claimed.

Claims (5)

1.- Navire de transport à deux cales de chargement, notamment pour le transport de gaz de pétrole liquéfié, comportant deux cales de chargement séparées par un espace intermédiaire défini entre deux cloisons étanches transversales délimitant respectivement lesdites cales de chargement, caractérisé en ce que ces deux cloisons étanches sont séparées par une distance au moins égale à la longueur conventionnelle de brèche dans le navire, définie par la réglementation internationale.1.- Transport vessel with two loading blocks, in particular for the transport of liquefied petroleum gas, comprising two loading blocks separated by an intermediate space defined between two transverse watertight partitions delimiting said loading blocks respectively, characterized in that these two watertight bulkheads are separated by a distance at least equal to the conventional length of breach in the ship, defined by international regulations. 2.- Navire de transport selon la revendication 1, caractérisé en ce que la longueur conventionnelle précitée est donnée par la formule : 1c = 1/3 L 2/3 dans laquelle L représente la longueur du navire. 2. Transport vessel according to claim 1, characterized in that the aforementioned conventional length is given by the formula: 1 c = 1/3 L 2/3 in which L represents the length of the ship. 3.- Navire de transport selon la revendication 1 ou 2, caractérisé en ce que l'espace intermédiaire précité est délimité par deux cloisons étanches longitudinales placées symétriquement par rapport au plan vertical médian et longitudinal du navire, chacune de ces cloisons étant respectivement à une distance du bordé du navire au moins égale à l'étendue transversale conventionnelle de brèche dans le navire, définie par la réglementation internationale.3. Transport vessel according to claim 1 or 2, characterized in that the aforementioned intermediate space is delimited by two longitudinal watertight partitions placed symmetrically with respect to the median and longitudinal vertical plane of the vessel, each of these partitions being respectively at distance from the ship's shell at least equal to the conventional transverse extent of breach in the ship, defined by international regulations. 4.- Navire de transport selon la revendication 3, caractérisé en ce que l'étendue transversale conventionnelle précitée est définie par la formule :
Figure imgb0003
dans laquelle B représente la largeur du navire.4. Transport vessel according to claim 3, characterized in that the aforementioned conventional transverse extent is defined by the formula:
Figure imgb0003
 where B represents the width of the ship. 5.- Navire de transport selon l'une des revendications précédentes, caractérisé en ce que l'espace intermédiaire précité est aménagé en cale de chargement, avantageusement en soute à combustible et/ou en réservoir de ballast.5.- Transport vessel according to one of the preceding claims, characterized in that the intermediate space above is arranged in a cargo hold, advantageously in a fuel bunker and / or in a ballast tank.
EP19820400499 1981-03-20 1982-03-18 Transport vessel with two load compartments Expired EP0062556B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8105669 1981-03-20
FR8105669A FR2502107B1 (en) 1981-03-20 1981-03-20 TRANSPORT VESSEL WITH TWO LOADING PITCHES

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EP0062556A1 true EP0062556A1 (en) 1982-10-13
EP0062556B1 EP0062556B1 (en) 1987-09-09

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EP (1) EP0062556B1 (en)
JP (1) JPS57172892A (en)
DE (1) DE3277193D1 (en)
ES (1) ES8302567A1 (en)
FR (1) FR2502107B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2857348T3 (en) 2016-11-07 2021-09-28 Ac Inox Gmbh Multi-lobe cargo tank
GR1010144B (en) * 2021-03-11 2021-12-30 Δημητριος Ηρακλη Κωσταλας Cargo ship

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1059310B (en) * 1956-02-27 1959-06-11 Johanna Muck Geb Roth Liquid natural gas tanker
FR1231206A (en) * 1959-04-08 1960-09-27 Improvements in the transport of methane in tankers
FR75764E (en) * 1958-11-27 1961-08-11 Ship hull for bulk transport of low temperature liquids, such as liquefied gases
FR2135936A5 (en) * 1971-04-14 1972-12-22 Mitsui Shipbuilding Eng

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52143689A (en) * 1976-05-24 1977-11-30 Mitsui Eng & Shipbuild Co Ltd Tanker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1059310B (en) * 1956-02-27 1959-06-11 Johanna Muck Geb Roth Liquid natural gas tanker
FR75764E (en) * 1958-11-27 1961-08-11 Ship hull for bulk transport of low temperature liquids, such as liquefied gases
FR1231206A (en) * 1959-04-08 1960-09-27 Improvements in the transport of methane in tankers
FR2135936A5 (en) * 1971-04-14 1972-12-22 Mitsui Shipbuilding Eng

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SCHIFF UND HAFEN, vol. 31, no. 12, décembre 1979, HAMBURG (DE) G. WOISIN: "Konstruktion gegen Kollisionsauswirkungen", pages 1059-1069 *

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Publication number Publication date
DE3277193D1 (en) 1987-10-15
EP0062556B1 (en) 1987-09-09
FR2502107B1 (en) 1987-05-29
ES510617A0 (en) 1983-02-01
JPS57172892A (en) 1982-10-23
ES8302567A1 (en) 1983-02-01
FR2502107A1 (en) 1982-09-24

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