WO2016039126A1

WO2016039126A1 - Commercial vessel

Info

Publication number: WO2016039126A1
Application number: PCT/JP2015/073724
Authority: WO
Inventors: 孝一萱嶋; 崇中田
Original assignee: 三井造船株式会社
Priority date: 2014-09-10
Filing date: 2015-08-24
Publication date: 2016-03-17
Also published as: JP2016055771A

Abstract

A commercial vessel (1) is provided with a bridge-attached living structure (8) consisting of a main bridge (8a) and a living quarter (8b) and disposed on the aft sided, and an auxiliary bridge (20a) disposed toward the front with respect to the center of the vessel body. In this way, the height of the bridge-attached living structure (8) on the aft side is limited while ensuring livability, and a sufficient forward view is ensured including the forward visibility during passage of a marine area requiring caution.

Description

Commercial ship

The present invention can suppress the height of the stern-side dwelling structure on the stern side while securing the habitability in the commercial ship in which the dwelling structure with the bridge consisting of the bridge and the residential area is arranged on the stern side. Moreover, the present invention relates to a commercial ship that can sufficiently secure a forward view.

In conventional large commercial ships, a residential structure with a bridge with a bridge (steering room) on the upper part of the residential area structure is usually provided on the stern side, ensuring a forward view on the bridge during normal voyage. Therefore, the height of the residential structure with a bridge was determined. Ballast water is additionally installed when sailing in canals, harbors, narrow waterways, etc., where safety is particularly required in order to secure a forward view while keeping the height of this residential structure with a bridge as small as possible. Or by loading the cargo biased forward, the draft and trim were adjusted to ensure a forward view.

In particular, in a container ship carrying cargo on the upper deck or an LNG ship 1X having a large structure such as a spherical tank 10 on the upper deck 9 as shown in FIG. L. Because the forward visibility of the forward line of sight La etc. is obstructed by the cargo or container 10 ahead of the bridge 8a and the spherical tank 10 etc., the blind spot becomes larger, and it is difficult to secure the forward visibility compared to ordinary ships. It was necessary to raise the residential structure 8 with a bridge provided on the side.

As a result, the weight is increased due to the need to take vibration countermeasures for this high-floor residential structure, and the high-pressure residential structure increases the wind pressure resistance and deteriorates fuel consumption. There was a problem that the height (air draft) rose and it became difficult to navigate under the bridge on the route, which hindered operation.

As a countermeasure, for example, as described in Japanese Patent Application Laid-Open No. Sho 61-241293, in a ship having a bridge on the upper deck of the stern part, the boats are arranged in the direction of the captain on the upper deck. A tank-equipped ship has been proposed in which the foremost first tank of the plurality of vertical cylindrical tanks is formed lower in height than the second tank behind it to improve the forward view from the bridge. ing.

If the height of the first tank at the foremost part is lowered as in this tank-equipped ship, the amount of cargo will be reduced accordingly, so the tank shape is not spherical but the shape of a vertical cylinder However, depending on the type of loading, there is a problem that strength problems may occur, and in the case of container ships, the height of loads such as containers is set in front of the bridge. If it is lowered, there will be a problem that the cargo load will be reduced accordingly.

As another countermeasure, for example, as described in Japanese Patent Application Laid-Open No. 2002-220091, a generator room is provided on the bow side, and a living room including a steering room above the generator room. On the other hand, the electricity generated by the generator in the generator room is supplied to the drive motor provided on the stern side and the propeller for propulsion is rotated to increase the cargo space and improve the forward view from the wheelhouse A container ship has been proposed that enables safe navigation.

However, if a residential structure with a bridge is placed at the bow to ensure forward visibility, such as this container ship, the bow will be greatly shaken by the waves. It is necessary to increase the structural strength of the dwelling structure with a bridge in consideration of the swaying of the bridge, and the necessity of countermeasures against the blue waves coming from the bow arises, increasing the weight of the dwelling structure with a bridge. There is a problem that the cargo load decreases. In addition, there is a negative effect that the habitability in the residential area is deteriorated due to the large shaking of the bow.

Japanese Patent Application No. Sho 61-241293 Japanese Patent Application Laid-Open No. 2002-220091

On the other hand, the inventors of the present invention particularly in the case where a sufficient forward view is required, such as in a port, a canal, a narrow channel, a sea area where ship traffic is intense, etc., compared with a case where a commercial ship is navigating a wide open ocean. When navigating in areas requiring caution, it is not necessarily the entire voyage of the ship, but is a part of the entire voyage. When I did, I came up with the idea that it would be a calm sea state.

The present invention has been made in view of the above situation, and its purpose is to provide a stern while securing habitability in a commercial ship in which a residential structure with a bridge composed of a bridge and a residential area is arranged on the stern side. Another object of the present invention is to provide a commercial ship that can suppress the height of the residential structure with a bridge on the side and that can sufficiently secure a forward view including a forward view when navigating in a sea area requiring attention.

A commercial vessel for achieving the above-mentioned purpose is configured by arranging a residential structure with a bridge consisting of a main bridge and a residential area on the stern side and providing an auxiliary bridge ahead of the center of the hull. The Here, the center part of the hull means midship. In addition, the meaning of a commercial ship is to exclude special purpose ships such as fireboats, crane ships and patrol ships.

According to this configuration, in the case of a provisional voyage that requires special safety, such as in a harbor, a canal, a narrow channel, or a sea area where ship traffic is severe, instead of a normal voyage, auxiliary assistance placed in front By moving the steering wheel to the bridge and maneuvering using the auxiliary bridge, it is possible to sufficiently secure the forward visibility including the forward view. By securing sufficient forward visibility with this auxiliary bridge, the height of the main bridge on the stern side and the maximum height in this commercial ship can be suppressed, compared to the case where the residential structure with a bridge is placed in front, It is possible to reduce the shaking of the residential area and reduce the weight of the residential structure with a bridge.

In other words, by installing an additional auxiliary bridge in front of the center of the commercial ship, the height of the main bridge on the stern side and the residential structure with the bridge is reduced. By using it, it is possible to secure a sufficient forward field of view and ensure safety.

In addition, since the structure with an auxiliary bridge does not include a residential area, the scale of the structure is smaller than that of a residential structure with a bridge. It is possible to remarkably suppress an increase in strength and an increase in weight for coping with the above, and an increase in weight can be suppressed.

Furthermore, when navigating the sea area requiring attention, it is considered that the sea state is likely to be relatively calm because it is not the open ocean, so when maneuvering on an auxiliary bridge, it is expected that the hull motion will be small. Is done. For this reason, even if the auxiliary bridge is arranged in the front, it is considered that the influence of the hull movement on the maneuvering work is small.

The present invention can be applied to general commercial ships such as cargo ships, but the effect of the present invention is particularly great for large general commercial ships. In particular, cargo such as containers and structures such as tanks are provided on the deck. There are obstacles to the prospects, and in the prior art, the effect of the present invention is particularly great for container ships and LNG ships in which it is necessary to increase the height of the residential structure with a bridge. Among them, the effect of the present invention is great for a spherical tank type LNG ship having a large spherical tank on the upper deck and having a section provided ahead of the cargo section.

In the above commercial ship, when the auxiliary bridge is arranged in front of the cargo section, it becomes easier to secure a forward view, and in particular, the cargo contains a volatile component and the cargo section is not a safety section. In this case, the auxiliary bridge can be provided in the safety section ahead of the cargo section, and a structure for newly making the auxiliary bridge into the safety section is not necessary. Furthermore, if there is a load such as a container or a structure such as a tank on the upper deck, an auxiliary bridge will be provided in front of it, so that the front of the load or structure is covered by this auxiliary bridge. be able to. Therefore, the effect of reducing the wind pressure resistance of the whole hull can be expected by making the auxiliary bridge a shape having a low wind pressure resistance.

In the above commercial ship, if it is configured to have a closed section at the bottom of the auxiliary bridge, the auxiliary bridge is often provided higher than the upper deck in order to ensure forward visibility. A section is formed in the lower part, and by closing the section, it is possible to easily secure a space that can be used as a cargo equipment room, a lifting / mooring device section, or the like.

In the above commercial ship, if the enclosed section below the auxiliary bridge is a cargo equipment room, it is not necessary to provide the cargo equipment room between spherical tanks as in the prior art, and this cargo equipment room is provided separately. This can prevent an increase in weight and an increase in wind pressure resistance.

In the above commercial vessel, when the enclosed section below the auxiliary bridge is configured as a lifting / mooring device section, when the commercial vessel goes to a cold region, the lifting / mooring device is exposed to rain / snow・ In order to avoid freezing by splashing water, a lifting / mooring device may be provided in a fully closed compartment. It can be effectively used as a section to be arranged.

In the above-mentioned commercial ship, if the overhanging deck that can visually recognize the side of the hull is provided on both sides of the auxiliary bridge or in the vicinity thereof, the side of the hull and the vicinity thereof can be easily put into view. Can be sufficiently confirmed, and safety can be further increased. The overhanging deck may be enclosed. A surveillance camera for securing the rear view may be provided.

In the above-mentioned commercial ship, when a bridge connecting passage enclosed between the residential structure with a bridge and the auxiliary bridge is provided, the main bridge and the auxiliary bridge can be connected to each other without passing through an exposed part even in stormy weather. You can move between them.

According to the commercial ship of the present invention, it is not a normal voyage, but in a tentative voyage that requires a particularly safe area such as a port, a canal, a narrow channel, and a sea area where traffic is severe, such as By maneuvering using the arranged auxiliary bridge, it is possible to sufficiently secure the forward view including the forward view.

And, by securing sufficient forward visibility with this auxiliary bridge, the height of the main bridge on the stern side and the maximum height in this commercial ship can be suppressed, and when a residential structure with a bridge is arranged in the front In comparison, the vibration in the residential area can be reduced, and the weight of the residential structure with a bridge can be reduced. In addition, since the structure with an auxiliary bridge does not include a residential area, the scale of the structure is smaller than that of a residential structure with a bridge. It is possible to remarkably suppress an increase in strength and an increase in weight for coping with the above, and an increase in weight can be suppressed.

FIG. 1 is a side view schematically showing a configuration of a commercial ship according to an embodiment of the present invention, and shows a case of a container ship. FIG. 2 is a side view schematically showing the configuration of the commercial ship according to the embodiment of the present invention, and shows the case of an LNG ship. FIG. 3 is a partial perspective view showing a portion of the auxiliary bridge. FIG. 4 is a partial perspective view showing a case where an overhanging deck is provided on the auxiliary bridge. FIG. 5 is a partial perspective view showing a case where a dodger is provided on the auxiliary bridge. FIG. 6 is a diagram schematically showing the relationship between the configuration of the LNG ship and the forward view in the prior art.

Hereinafter, a commercial ship according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the container ship and the LNG ship are described, but the present invention can be applied to other general commercial ships.

A container ship (commercial ship) 1 as shown in FIG. 1 is provided with a double bottom cargo hold 4 provided with a cargo hold bottom plate 3 on a ship bottom 2, and a propeller 5 and a rudder 6 for navigation at the stern. In addition, a main engine (not shown) for driving the propeller 5 and an engine room 7 for housing auxiliary machinery are provided. On the engine room 7, a main bridge (nautical bridge: painted black) (Part) A residential structure 8 with a bridge composed of 8a and a residential area 8b is provided. A container 30 is mounted on the upper deck 9 in front of the residential structure 8 with a bridge.

In addition, a LNG ship (commercial ship) 1A as shown in FIG. 2 has a spherical tank 10 of low-temperature liquefied gas mounted in a double bottom cargo hold 4 in which a cargo hold bottom plate 3 is provided on the ship bottom 2. The stern is provided with a propeller 5 and a rudder 6 for navigation. Further, a main engine (not shown) for driving the propeller 5 and an engine room 7 for accommodating auxiliary machinery are provided. On the engine room 7, a residential structure 8 with a bridge composed of a main bridge 8a and a residential area 8b is provided. Is provided. The upper part of the spherical tank 10 protrudes above the upper deck 9 in front of the residential structure 8 with a bridge.

In the present invention, in these

commercial ships

1, 1A, a residential structure 8 with a bridge composed of a main bridge 8a and a residential area 8b is arranged on the stern side, and as shown in FIGS. Forward of the center (midship), preferably forward of 1/3 of the length between the normals from the bow perpendicular, more preferably forward of the cargo compartment, that is, more than the foremost cargo hold 4f A structure 20 having an auxiliary bridge (blacked portion) 20a and a closed section (cross hatched portion) 20b provided below the auxiliary bridge 20a is provided in front. The enclosed section 20b is not limited to watertightness, airtightness, and weathertightness, but includes a non-tight structure.

The auxiliary bridge 20a is provided with a navigation maneuvering device such as an auxiliary steering device, a main engine remote control device, a radar indicator, a gyro repeater, a GPS, a communication device, etc., and the right to control is entirely transferred from the main bridge 8a to the auxiliary bridge 20a. The equipment will be installed so that the steering person can move from the main bridge 8a to the auxiliary bridge 20a to operate the ship. When the commercial ship is an LNG ship, the enclosed compartment 20b is equipped with a cargo pump for moving cargo, equipment for controlling the pressure of the cargo tank, equipment for evaporating gas, equipment for regasification, etc. Provide. Further, when this commercial ship goes to a cold region, the dredging / mooring device is provided in the enclosed section 20b in order to prevent the dredging / mooring device from freezing due to rain, snow and water splashes.

As a result, the auxiliary bridge 20a arranged in the forward direction is not used in a normal voyage, but in a tentative voyage that requires a particularly safe area such as a harbor, a canal, a narrow channel, or a marine area where ship traffic is severe. By using and maneuvering, sufficient forward visibility including forward view is ensured.

Further, when the auxiliary bridge 20a is disposed in front of the cargo section, that is, as shown in FIGS. 1 and 2, the front view is more easily secured, If the cargo contains volatile components and the cargo compartment is not a safe compartment, the auxiliary bridge 20a is provided in the safety compartment ahead of the cargo compartment. The structure for doing so can be made unnecessary. Furthermore, since the auxiliary bridge 20a is provided on the upper deck 9 in front of the load such as the container 30 and the structure such as the tank 10, the front of the load and the structure can be covered by the auxiliary bridge 20a. For this reason, when the auxiliary bridge 20a has a shape with a low wind pressure resistance, the wind pressure resistance of the entire hull can be reduced.

The height of the auxiliary bridge 20a from the exposed deck (the upper deck 9, the bow tower deck, etc.) is determined by the position of the front and rear where the auxiliary bridge 20a is arranged and the range of the required forward visibility. For example, the height of the main bridge 8a is 2 The height is set to about one-fourth to one-fourth.

As the shape of the auxiliary bridge 20a having a low wind pressure resistance, it is effective to provide chamfering or rounding at a portion where the side surfaces of the structure 20 having the auxiliary bridge 20a intersect each other, and the front and upper surfaces of the auxiliary bridge 20a It is also effective to provide chamfering or rounding at the intersections. In particular, in consideration of the relationship with the container 30 and the spherical tank 10 disposed behind the structure 20, it is preferable that the wind pressure resistance is reduced as a whole.

Further, when the auxiliary bridge 20a is configured to have a closed section at the lower part, the auxiliary bridge 20a is usually provided higher than the upper deck 9 in order to secure a front view, so that the lower part of the auxiliary bridge 20a is provided. In this case, when this commercial ship goes to a cold region, it can be used as a dredging / mooring device section or a cargo equipment room. However, it is possible to avoid freezing due to rain, snow, or water droplets, or it is not necessary to provide the cargo equipment room 31 between the spherical tanks 10 as in the conventional LNG ship shown in FIG. In addition, it is possible to prevent an increase in weight and an increase in wind pressure resistance by separately providing a dredger / mooring device section and a cargo equipment room.

Also, as shown in FIG. 4, overhanging decks 21 that can visually recognize the side of the hull are provided on both sides of the auxiliary bridge 20a or in the vicinity thereof. As a result, the side surface of the hull and the vicinity thereof can be easily put into the field of view, so that the status of the part can be sufficiently confirmed, and safety is further increased. As shown in FIG. 5, the dodger 21A may be provided so as to protrude from the side surface of the auxiliary bridge 20a. However, since the height of the auxiliary bridge 20a may be relatively low, the overhanging deck 21 is structurally better. This is also advantageous in terms of manufacturing cost. Moreover, as shown in FIG.1 and FIG.2, you may provide the surveillance camera 22 for back view ensuring.

Further, when the bridge connecting passage 23 enclosed between the residential structure 8 with a bridge and the auxiliary bridge 20a is provided, the bridge between the main bridge 8a and the auxiliary bridge 20a does not pass through the exposed part even in stormy weather. Will be able to move. The bridge connecting passage 23 may be provided on the upper deck 9 as shown in FIG. 1, but may be provided below the upper deck 9 as shown in FIG.

According to the commercial ships such as the container ship 1 and the LNG ship 1A described above, it is not a normal voyage, but travels through a sea area requiring special safety, such as in a harbor, a canal, a narrow channel, or a sea area where ship traffic is severe. In provisional voyages, the forward visibility including the forward view can be sufficiently ensured by maneuvering using the auxiliary bridge arranged in front.

And by securing sufficient forward visibility by the auxiliary bridge 20a, the height of the main bridge 8a on the stern side and the maximum height of the

commercial ship

1, 1A can be suppressed, and the residential structure 8 with a bridge can be provided. Compared with the case where it arrange | positions ahead, the vibration of the residential area 8b can be reduced and the weight of the residential structure 8 with a bridge can be reduced. That is, since the structure 20 having the auxiliary bridge 20a does not include a residential area, the structure is smaller than the residential structure 8 with a bridge, and therefore, compared with the case where the residential structure 8 with a bridge is provided on the bow side. As a result, it is possible to remarkably suppress an increase in strength and an increase in weight to cope with the hull motion, and an increase in weight can be suppressed.

According to the commercial ship of the present invention, it is possible to secure sufficient forward visibility by the auxiliary bridge, so that the height of the main bridge on the stern side and the maximum height in this commercial ship can be suppressed, and the residence with a bridge Compared with the case where the structure is arranged in front, the vibration in the residential area can be reduced and the weight of the residential structure with a bridge can be reduced, so that it can be used for many commercial ships.

1 Container ship (commercial ship)
1A, 1X LNG ship (commercial ship)
2 Ship bottom 3 Cargo hold bottom plate 4 Cargo hold 5 Propeller 6 Rudder 7 Engine room 8 Residence structure with bridge 8a Main bridge 8b Residential area 9 Upper deck 10 Spherical tank 20 Auxiliary bridge structure 20a Auxiliary bridge 20b Closed section 21 Overhang deck 21A Dodger 22 Rear surveillance camera 23 Bridge connecting passage 30 Container 31 Cargo equipment room L. Water surface

Claims

A commercial vessel characterized in that a residential structure with a bridge consisting of a main bridge and a residential area is arranged on the stern side and an auxiliary bridge is provided in front of the center of the hull.
2. The commercial ship according to claim 1, wherein the auxiliary bridge is disposed in front of the cargo section.
The commercial ship according to claim 1 or 2, wherein the commercial ship has a closed section at a lower part of the auxiliary bridge.
The commercial vessel according to claim 3, wherein the enclosed section below the auxiliary bridge is a cargo equipment room.
The commercial vessel according to claim 3, wherein the enclosed section below the auxiliary bridge is a lifting / mooring device section.
The commercial ship according to any one of claims 1 to 5, wherein an overhanging deck capable of visually checking a side surface of the hull is provided on both sides of the auxiliary bridge or in the vicinity thereof.
The commercial ship according to any one of claims 1 to 6, wherein an inter-bridge connecting passage is provided between the residential structure with a bridge and the auxiliary bridge.