tsunami shelter

Abstract

Provide a tsunami shelter that can reliably protect evacuees from tsunamis associated with earthquakes. 【Solution means】On the upper surface side of a buoyancy body 3 formed in a substantially rectangular thick plate shape by a polystyrene resin and having a polyurethane resin applied to its entire surface, a triangular roof-shaped evacuation accommodation part 2 with an internal evacuation space 6 is laminated to form a tsunami shelter 1. According to the tsunami shelter 1 with such a configuration, since the buoyancy body 3 has extremely high impact resistance, abrasion resistance, etc. due to the application of the polyurethane resin, even if the tsunami shelter 1 is washed away by a tsunami and collides with floating objects such as driftwood on its buoyancy body, the buoyancy body is hardly damaged, destroyed, deformed, etc. by this, and consequently the form of the tsunami shelter is maintained, and the safety of the evacuees boarding the tsunami shelter is ensured.

Description

Technical Field

[0001] The present invention relates to a tsunami shelter for evacuating people when a tsunami is generated due to an earthquake.

Background Art

[0002] Various types of tsunami shelters of this kind have been proposed conventionally. When classified from the functional aspect, For example, as shown in Patent Document 1, it is composed of a structure fixedly installed on the ground. When a tsunami occurs, evacuees are accommodated and evacuated in this tsunami shelter, and the evacuees are protected against the flow of the tsunami. This is a ground-fixed type of tsunami shelter. For example, as shown in Patent Document 2, it is installed above the ground or on the sea separated from the ground. When a tsunami occurs, a large number of evacuees are accommodated and evacuated inside it, and it floats on the sea along with the flow of the tsunami to protect the evacuees. It is roughly classified into a floating type of tsunami shelter.

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, regarding earthquakes and accompanying tsunamis, the following information has been disseminated from relevant official organizations and the like. (a) Earthquakes and accompanying tsunamis can occur anywhere within 24 hours of a day, and it may be at night or during the day, and it may be during working hours or non-working hours. That is, it is not known whether evacuees can immediately take evacuation actions from the current situation.

[0005] (b) The time from the occurrence of an earthquake until the tsunami reaches the coast is much faster than one might imagine. For example, in the case of a Nankai Trough earthquake expected to occur in the near future, the time from the generation of a tsunami near the epicenter until it reaches the coast is estimated to be about 2 minutes in Shizuoka Prefecture, 3 minutes in Wakayama Prefecture, 4 minutes in Mie Prefecture, 5 minutes in Kochi Prefecture, and 7 minutes in Tokushima Prefecture. Also, even in areas far from the epicenter, it is predicted that the tsunami will reach in approximately 10 to 15 minutes. This indicates that there is often extremely little time available for evacuation actions to save lives after a tsunami occurs.

[0006] Also, regarding evacuation actions during a tsunami, the following points have been pointed out. (c) If the distance from the current location to the evacuation facility is short, evacuation can be achieved in a short time. However, if this distance is long, it is difficult to complete the evacuation in a short time. For example, if the affected person is an elderly person or a young and vulnerable person (such as a nursery school child, a kindergarten child, or a lower elementary school student), it takes time to move from the current location to the evacuation facility and it is difficult to be quick. (d) Even if one manages to reach the evacuation location, if sufficient evacuation training, etc. has not been carried out during normal times, it takes time to enter the evacuation location and it is difficult to be quick, which is serious in situations where it is difficult to confirm the footing, such as at night.

[0007] "Adaptability as a tsunami shelter shown in the above-mentioned patent documents" The tsunami shelter described in Patent Document 1 is a land-fixed type of tsunami shelter. Therefore, when the location where the evacuees are and the installation location of the tsunami shelter are far apart (which is mostly the case), for example, it may happen that the evacuees cannot reach the tsunami shelter by the time the tsunami arrives. This can also occur in cases where the occurrence of the tsunami is during an inactive time zone such as during sleep or when it is difficult to immediately interrupt work during working hours.

[0008] The tsunami shelter described in Patent Document 2 is a floating-type tsunami shelter, but since it is generally large-sized, it is difficult to moor the tsunami shelter near the coast close to the evacuees at all times, and it has to be moored at facilities such as ports. As a result, when the location of the evacuees is far from the mooring position, the same problems as in the case of Patent Document 1 are a concern. In addition, since the tsunami shelter is large-sized and it takes time for many disaster victims to be accommodated in the tsunami shelter, the worst situation where all evacuees cannot be accommodated in the tsunami shelter by the time the tsunami arrives is also assumed.

[0009] As described above, in the tsunami shelters described in Patent Document 1 and Patent Document 2, it cannot be said that the original function of the tsunami shelter, which is to surely move the evacuees to the tsunami shelter and accommodate them therein to protect them from the damage of the tsunami before the arrival of the tsunami accompanying the earthquake, can be sufficiently achieved.

[0010] Therefore, the present invention has been made for the purpose of providing a tsunami shelter that can surely protect evacuees from a tsunami accompanying an earthquake.

Means for Solving the Problems

[0011] This In the tsunami shelter according to the first invention of the wish, a triangular roof-shaped evacuation accommodation part with an evacuation space inside is laminated on the upper surface side of a buoyancy body formed in a substantially rectangular thick plate shape by a polystyrene resin and coated with a polyurethane resin on its entire surface. It is installed and held on the ground during normal times, while it floats in the flow of the tsunami when a tsunami occurs. tsunami shelter That is, On the upper surface of the above buoyancy body, a recessed portion that is substantially rectangular in plan view is provided, while on the lower surface of the above evacuation and accommodation portion, a base that is substantially rectangular in plan view is provided, and the above buoyancy body and the above evacuation and accommodation portion are fastened and fixed by fixing bolts in a state where the base of the above evacuation and accommodation portion is fitted into the recessed portion of the above buoyancy body.

[0012] In the tsunami shelter according to the present application Second invention in the tsunami shelter according to the above First invention on the upper surface of the peripheral wall of the above buoyancy body, an inclined surface that slopes downward toward the inner side in the plane direction is provided, and by pressing the lower end surface of the above evacuation and accommodation portion against the above inclined surface, a sealing property between the above buoyancy body and the above evacuation and accommodation portion is ensured.

Effects of the Invention

[0013] (a) According to the tsunami shelter related to First invention the present application, a triangular roof-shaped evacuation accommodation part with an evacuation space inside is laminated on the upper surface side of a buoyancy body formed in a substantially rectangular thick plate shape by a polystyrene resin and having a polyurethane resin applied to its entire surface. Ordinarily, it is installed and held on the ground, while during a tsunami, it floats in the flow of the tsunami. Therefore, (a-1) Since the buoyancy body is made of polystyrene resin and a polyurethane resin is applied to its entire surface, this coating layer of the polyurethane resin has extremely high impact resistance, abrasion resistance, chemical resistance, corrosion resistance, and high waterproofness. Therefore, the buoyancy body with the coating layer of the polyurethane resin has high impact resistance, abrasion resistance, chemical resistance, and corrosion resistance. For example, even if the tsunami shelter is washed away by the tsunami and the buoyancy body collides with floating objects such as driftwood, the buoyancy body is hardly damaged, broken, deformed, etc., and the safety of the evacuees boarding the tsunami shelter is ensured. (a-2) Since the buoyancy body constituting a part of the above-mentioned tsunami shelter is made of expanded polystyrene resin, and the tsunami shelter as a whole is lightweight and has high buoyancy performance, even if the tsunami shelter is washed away by the tsunami and sways, a good floating state is maintained, and the safety of the evacuees boarding the tsunami shelter is ensured. (a-3) Since the tsunami shelter provided with a buoyancy body made of polystyrene resin is lightweight, for example, ordinarily, the above-mentioned tsunami shelter is installed on the ground near the evacuees, while during a tsunami, the tsunami shelter can be directly placed on the flow of the tsunami from the ground installation position and floated, and the safety of the disaster victims evacuated and accommodated in the evacuation accommodation part can be ensured. (a-4) Since the above-mentioned evacuation accommodation part is in the shape of a triangular roof, for example, in the floating state at sea of the tsunami shelter 1 accompanying the occurrence of an earthquake, even if floating objects such as driftwood collide with the roof part of the above-mentioned evacuation accommodation part 2, these are smoothly removed from the roof 4 due to the inclination of the roof, and the tsunami shelter is prevented from being damaged as much as possible. (a-5) During normal times, the tsunami shelter can be installed and held on the ground. For example, the tsunami shelter can be installed in the courtyard of a nursery or kindergarten, or on the grounds of a facility for the elderly. By using the evacuation and accommodation section of the tsunami shelter as a playground or classroom for children on a daily basis, or as a recreation venue or lounge for the elderly, children or the elderly can experience and learn the way to enter and exit the evacuation and accommodation section of the tsunami shelter every day. Therefore, for example, in the event of an earthquake, they can quickly and accurately evacuate into the evacuation and accommodation section without confusion, enhancing the evacuation and protection performance of children or the elderly. In particular, during the day, the safety of children who live in a group on the campus away from the protection of their guardians is promoted, and ultimately, the sense of security of the guardians is also enhanced. Useful effects such as the above can be obtained.

[0014] (b) Furthermore, In the tsunami shelter according to the present application First invention In addition to the effects described in the above (a), the following specific effects can be obtained. That is, in this invention, while a recessed portion substantially rectangular in plan view is provided on the upper surface of the buoyancy body, a base substantially rectangular in plan view is provided on the lower surface of the evacuation and accommodation section. The buoyancy body and the evacuation and accommodation section are fastened and fixed by fixing bolts in a state where the base of the evacuation and accommodation section is fitted into the recessed portion of the buoyancy body. (b-1) Positioning of the buoyancy body and the evacuation and accommodation section during the assembly of the tsunami shelter is easy, and the assembly work efficiency is improved. (b-2) The connection strength between the evacuation and accommodation section and the buoyancy body is high, and the reliability in the use of the tsunami shelter is improved. (b-3) By loosening the fastening of the fixing bolts, the buoyancy body and the evacuation and accommodation section can be separated. For example, during the installation or removal of the tsunami shelter, by separating the buoyancy body and the evacuation and accommodation section and performing the transportation work individually, the work efficiency can be improved. Effects such as the above can be obtained.

[0015] (c) In the tsunami shelter according to the present application Second invention In the tsunami shelter according to the above (a) And In addition to the effects described in (b), the following specific effects can be obtained. That is, in this Second In the invention, an inclined surface that slopes downward inward in the plane direction is provided on the upper surface of the peripheral wall of the buoyancy body. By pressing the lower end surface of the evacuation and accommodation section against the inclined surface, a sealing property between the buoyancy body and the evacuation and accommodation section is ensured. Therefore, the reliability of the tsunami shelter in a floating state on the sea is guaranteed, and consequently, the safety of the disaster victims evacuated and accommodated in the evacuation and accommodation section is ensured.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0017] Hereinafter, the tsunami shelter according to the embodiment of the present invention will be specifically described with reference to the accompanying drawings.

[0018] As shown in FIGS. 1 to 7 respectively, the tsunami shelter 1 according to the present invention is configured to include an evacuation and accommodation section 2 and a buoyancy body 3 described below.

[0019] 「Configuration of the Evacuation and Accommodation Section 2」 The above-mentioned evacuation and accommodation section 2 is formed in a clasped structure by a base 20 formed in a long rectangular frame shape by horizontal members 20A and vertical members 20B of a predetermined size, and a plurality of vertical posts 21 erected respectively from the left and right vertical members 20B of the base 20. Further, a heat insulation plate 22 is provided on the outer surface side of this clasped structure so as to cover the upper surfaces of the left and right vertical posts 21, and further, a roof member 23 made of galvanized steel plate is attached in a laminated state on the upper surface side of the heat insulation plate 22 to form a triangular inclined roof 4, whereby the above-mentioned evacuation and accommodation section 2 is constituted.

[0020] Incidentally, as shown in FIG. 3, the heat insulation plate 22 is a composite material in which plate materials 22B and 22C are respectively attached to the front and back surfaces of a heat insulating material 22A of a required thickness. Further, a ridge restraint 44 is provided at the ridge portion at the upper end of the roof 4.

[0021] On the other hand, the lower end of the heat insulation plate 22 is located near the upper surface of the base 20, while the lower end of the roof 4 extends further downward than the lower end of the heat insulation plate 22, and a space is formed between the vertical member 20B of the base 20 for the upper end portion of the side wall portion 32 of the buoyancy body 3 described later to enter.

[0022] Also, as shown in FIG. 2, the front side of the evacuation and accommodation section 2 is closed by a wooden front wall 41 provided with a door 43 and a lighting window 45. On the other hand, as shown in FIG. 5, the back side of the evacuation and accommodation section 2 is closed by a wooden back wall 42 provided with a lighting window 46.

[0026] And the space surrounded by the roof 4, the front wall 41 and the back wall 42 becomes an evacuation room 6 during evacuation accompanying the occurrence of a tsunami. This evacuation room 6 is used as a play area or a classroom for children when the installation location of the tsunami shelter is a nursery garden or a kindergarten garden during normal times (when the tsunami shelter 1 is installed on the ground), and is used as a recreation venue or a rest room when the installation location of the tsunami shelter is a facility for the elderly.

[0023] In the evacuation room 6 of the above-mentioned evacuation and accommodation section 2, as shown in FIGS. 5 and 6, several chairs 53 are provided. The seat surface plate of this chair 53 is made openable and closable, and supplies for evacuation can be stored inside it.

[0024] Also, as shown in FIG. 1, in the above-mentioned tsunami shelter 1, from the viewpoint of preventing seawater from entering the evacuation room 6 in a floating state on the sea, the formation position of the above-mentioned door 43 is high. However, if the position of this door 43 is high, for example, when the user (evacuee) of the tsunami shelter 1 is a small child or an elderly person, it becomes difficult to enter and exit the evacuation room 6 itself. Therefore, a slope 5 is detachably attached to the front side of this door 43.

[0025] "Configuration of the buoyancy body 3" The above-mentioned buoyancy body 3 is for giving the required buoyancy to the entire tsunami shelter 1 including the above-mentioned evacuation and accommodation 2 that houses a predetermined number of evacuees in the above-mentioned evacuation room 6 and realizing its floating on the sea. It is configured by applying a polyurethane resin to the entire surface of a main body portion 31 formed in a substantially rectangular thick plate shape by a polystyrene foam resin to form a coating layer 7. This

[0026] The buoyancy body 3 whose entire surface is covered with this coating layer 7 of polyurethane resin has high impact resistance, abrasion resistance, chemical resistance, and corrosion resistance based on the physical properties of the polyurethane resin. As will be described later, in a state where the above-mentioned evacuation and accommodation section 2 is laminated and fixed on the upper side of the buoyancy body 3 to form the tsunami shelter 1, for example, even if the above-mentioned tsunami shelter 1 is washed away by a tsunami and collides with floating objects such as driftwood, it is hardly damaged, destroyed, deformed, etc. by this, and its function can be maintained. In this embodiment, the thickness of the coating layer 7 of the polyurethane resin is set to about 2 mm.

[0027] The above-mentioned buoyancy body 3 includes a main body 31 formed in a substantially rectangular thick plate shape by a foamed polystyrene resin. On the upper surface of this main body 31, a recessed portion 33 with a predetermined depth is formed. The planar shape of this recessed portion 33 is set to a dimension slightly larger than the outer dimension of the base 20 of the above-mentioned buoyancy body 3, and its depth is set to a dimension substantially matching the height dimension of the base 20.

[0028] Therefore, as shown in FIGS. 2 and 3, in a state where the base 20 of the above-mentioned evacuation and accommodation portion 2 is fitted into the recessed portion 33 of the above-mentioned buoyancy body 3 from above, the side wall portion 32 of the above-mentioned buoyancy body 3 exists outside the base 20. And the thickness of the side wall portion 32 of this buoyancy body 3 is set to substantially match the gap between the base 20 of the above-mentioned evacuation and accommodation portion 2 and the inner surface of the lower end portion of the roof 4 as described above.

[0029] Furthermore, the upper surface of this side wall portion 32 is an upward inclined surface 34 that rises and inclines inward in the planar direction from the outer peripheral end, and a downward inclined surface 35 that descends and inclines inward in the planar direction from the top of the upward inclined surface 34.

[0030] "Integration of the Evacuation and Accommodation Portion 2 and the Buoyancy Body 3" The assembly of the above-mentioned evacuation and accommodation portion 2 and the above-mentioned buoyancy body 3 is performed by fitting the base 20 of the above-mentioned evacuation and accommodation portion 2 into the recessed portion 33 of the above-mentioned buoyancy body 3 as shown in FIG. 3. And in this fitted state, the base 20 of the above-mentioned evacuation and accommodation portion 2 and the buoyancy body 3 are tightened by a fixing bolt 51 inserted through a bolt hole 38 provided to penetrate the base 20 and the main body 31 of the buoyancy body 3 in the vertical direction. Incidentally, a total of 4 fixing bolts 51 are provided corresponding to the four corners of the main body 31 of the above-mentioned buoyancy body 3 (refer to the positions indicated by the four reference numerals 38 in FIG. 7).

[0031] Note that one end of the fixing bolt 51 is fixedly welded with a seat plate 36 made of an iron plate of a predetermined size. The reason for providing this seat plate 36 is that since the buoyancy body 3 has a foamed polystyrene resin as a base, when the fixing bolt 51 is fastened, there is a concern that the pressure-receiving portion may be deformed by the fastening force. Therefore, the pressure-receiving area is enlarged to reduce the surface pressure on the foamed polystyrene resin side and obtain an appropriate fastening state.

[0032] Also, in relation to the attachment of the seat plate 36 to the fixing bolt 51, at the end of the bolt hole 38 on the main body portion 31 side of the buoyancy body 3, a seat hole 39 is formed which has a shape slightly larger than the peripheral surface 36 of the seat plate and is deeper than the thickness of the seat plate 36. And on the bottom surface side of this seat hole 39, a polyurethane resin is applied in advance. With this polyurethane resin applied, the seat plate 36 is grounded from above the polyurethane resin through the fixing bolt 51 in the bolt hole 38. In this state, the fixing bolt 51 is tightened to fasten and fix the base 20 of the evacuation and accommodation portion 2 and the main body portion 31 of the buoyancy body 3. Then, a new polyurethane resin is applied to fill the seat hole 39 and integrated with the coating layer 7 formed on the entire surface of the main body portion 31 by the previous application.

[0033] Furthermore, as shown in FIG. 7, when the evacuation and accommodation portion 2 is fitted into the recessed portion 33 of the buoyancy body 3 and fastened with four fixing bolts 51, the top side of the side wall portion 32 of the buoyancy body 3 is in a state of being fitted into the gap portion between the outer peripheral side of the base 20 of the evacuation and accommodation portion 2 and the inner surface of the lower end side of the roof 4. And in this case, the downward inclined surface 35 of the buoyancy body 3 is pressed against the lower end surface of the heat insulating plate 22 of the evacuation and accommodation portion 2, thereby ensuring the sealing property between the evacuation and accommodation portion 2 and the buoyancy body 3. Note that in order to enhance the sealing property, it is also possible to interpose an appropriate sealing material at this pressing contact portion.

[0034] Further, since the rising inclined surface 34 of the side wall portion 32 of the buoyancy body 3 is in contact with the inner surface of the roof 4 of the evacuation and accommodation portion 2, by fastening the roof 4 and the base 20 with the fastening screws 52, the connection strength between the evacuation and accommodation portion 2 and the buoyancy body 3 is increased, and the entry of seawater from this contact portion toward the seal portion side is also suppressed, and the sealing performance of the seal portion is further enhanced.

[0035] "Usage Method and Function and Effect of the Tsunami Shelter 1" (1) Normal Times In normal times, the tsunami shelter 1 is installed on the ground. For example, when evacuating and protecting children who are living in a group in a nursery or kindergarten, it is placed on the garden of that nursery, and when evacuating and protecting the elderly who are living in a group in an elderly facility, it is placed on the grounds of that facility. The tsunami shelter 1 is simply placed (not fixed to the ground).

[0036] For the placement operation of this tsunami shelter 1, with the evacuation and accommodation portion 2 and the buoyancy body 3 separated, first the buoyancy body 3 is placed at a predetermined position. Next, the evacuation and accommodation portion 2 is carried in and stacked and arranged on the upper surface side of the previously placed buoyancy body 3, and the base 20 of the evacuation and accommodation portion 2 and the main body portion 31 of the buoyancy body 3 are fastened and integrated with four fixing bolts 51 to obtain the tsunami shelter 1.

[0037] By separately carrying in and assembling the evacuation and accommodation portion 2 and the buoyancy body 3 in a separated state in this way, compared with the case of carrying in and placing them at the site in a pre-assembled integrated state of the evacuation and accommodation portion 2 and the buoyancy body 3, the handling weight is smaller and it is smaller in size, so the carrying-in and assembly work is easier, the work efficiency is improved, and the work cost is reduced.

[0038] After the completion of the placement operation of the tsunami shelter 1, the slope 5 is installed on the front side of the door 43 of the evacuation and accommodation portion 2 to facilitate entry and exit to and from the evacuation room 6 of the evacuation and accommodation portion 2.

[0039] The installed tsunami shelter 1 is not simply kept in the installed state, but is opened daily and used, for example, as a playground for children, a classroom, etc., or as a rehabilitation venue or a rest room for the elderly. By using the evacuation room 6 of the above-mentioned evacuation and accommodation section 2 in this way, children and the elderly will learn by themselves the ways and procedures of entering and leaving the evacuation room 6 of the above-mentioned evacuation and accommodation section 2, and will be able to smoothly evacuate to the evacuation room 6 of the above-mentioned evacuation and accommodation section 2 when a tsunami occurs due to an earthquake.

[0040] The occurrence of an earthquake and the accompanying tsunami cannot be predicted as to when and at what time it will occur, and it may occur under the situation where children are living in the kindergarten away from the protection of their guardians. In such a situation, the fact that children can evacuate safely and quickly to the evacuation room 6 of the above-mentioned tsunami shelter 1 will give the guardians a sense of reassurance like no other.

[0041] (2) When an earthquake and a tsunami occur In this case, immediately take evacuation action and evacuate to and wait in the above-mentioned evacuation room 6 of the above-mentioned tsunami shelter 1. When the tsunami hits, the above-mentioned tsunami shelter 1 will float by being washed away by the tsunami, protecting the children evacuated and accommodated in the evacuation room 6. For example, it is ensured that they will not be swallowed by the tsunami and get injured, or in the worst case, die.

[0042] The evacuation situation in the above-mentioned evacuation room 6 does not necessarily end in a short time and may last for a long time. In this case, the body can be maintained by appropriately using the water and food stored in the chair 53 of the above-mentioned evacuation room 6.

Industrial Applicability

[0043] The tsunami shelter according to the present invention can be widely used in the field of disaster prevention industry.

Explanation of Reference Numerals

[0044] 1 ·· Tsunami shelter 2 ·· Evacuation and accommodation section 3 ·· Buoyancy body 4 ·· Roof 5 ·· Slope 6 ·· Refuge room 7 ·· Coating layer 20 ·· Base 21 ·· Rafter 22 ·· Heat insulation board 23 ·· Roof material 24 ·· Floor board 31 ·· Main body part 32 ·· Side wall part 33 ·· Depression part 34 ·· Rising inclined plane 35 ·· Descending inclined plane 36 ·· Seat board 38 ·· Bolt hole 39 ·· Seat hole 41 ·· Front wall 42 ·· Rear wall 43 ·· Door 44 ·· Ridge restraint 45 ·· Lighting window 46 ·· Lighting window 51 ·· Fixed bolt 52 ·· Fastening screw 53 ·· Chair

Claims

1. The tsunami shelter is constructed by laminating a triangular roof-shaped evacuation accommodation section with an evacuation space inside on the upper surface of a buoyant body made of polystyrene foam resin in the shape of a roughly rectangular thick plate and having a polyurethane resin applied to the entire surface thereof, and is installed and maintained on the ground under normal circumstances, and floats on the flow of the tsunami when a tsunami occurs. A tsunami shelter characterized in that a recessed portion having an approximately rectangular shape in plan view is provided on the upper surface of the buoyant body, while a base having an approximately rectangular shape in plan view is provided on the underside of the evacuation accommodation section, and the buoyant body and the evacuation accommodation section are fastened together by fixing bolts with the base of the evacuation accommodation section fitted into the recessed portion of the buoyant body.

2. In claim 1, This tsunami shelter is characterized in that the upper surface of the peripheral wall of the buoyant body is provided with an inclined surface that slopes downward inward in the planar direction, and the lower end surface of the evacuation accommodation section is pressed against the inclined surface, thereby ensuring sealing between the buoyant body and the evacuation accommodation section.

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