WO1995035233A1 - Equipement de survie - Google Patents

Equipement de survie Download PDF

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Publication number
WO1995035233A1
WO1995035233A1 PCT/DK1995/000222 DK9500222W WO9535233A1 WO 1995035233 A1 WO1995035233 A1 WO 1995035233A1 DK 9500222 W DK9500222 W DK 9500222W WO 9535233 A1 WO9535233 A1 WO 9535233A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
life
ship
platform
water
Prior art date
Application number
PCT/DK1995/000222
Other languages
English (en)
Inventor
Ole Andersen
Original Assignee
Viking Life-Saving Equipment A/S
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 Viking Life-Saving Equipment A/S filed Critical Viking Life-Saving Equipment A/S
Priority to AU26695/95A priority Critical patent/AU2669595A/en
Publication of WO1995035233A1 publication Critical patent/WO1995035233A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C9/22—Devices for holding or launching life-buoys, inflatable life-rafts, or other floatable life-saving equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B23/00—Equipment for handling lifeboats or the like
    • B63B23/40—Use of lowering or hoisting gear
    • B63B23/54—Use of lowering or hoisting gear with trimming equipment

Definitions

  • the invention concerns a life-saving equipment for rescuing persons onboard a sinking ship, tor example, and which comprises a floatable life-saving device, e.g. an inflatable platform for launching at the ship's side and taking up persons who are to be rescued.
  • a floatable life-saving device e.g. an inflatable platform for launching at the ship's side and taking up persons who are to be rescued.
  • This life-saving equipment has traditionally comprised a number of lifeboats hanging in davits, for example, on the ship, and are lowered into the water when the boats are to be used for evacuation of persons from the ship.
  • the containers with the rubber rafts are thrown overboard and, on the sea, the rafts are automatically inflated by means of a special inflation device belonging to each raft.
  • the rafts are tethered to the ship by detachable lines that can be released so the rafts freely can sail and avoid being pulled underwater with the sinking ship.
  • SUBSTITUTE SHEET Systems have therefore been developed which enable those onboard to transfer to the life rafts directly from the ship itself. These systems usually comprise an inflatable platform and an inflatable chute or stocking-like hose, which from an evacuation cassette on the ship is led down to the inflated platform.
  • Persons to be rescued can now, on the top of the chute or through the hose, skid down onto the inflated platform from which they can board the inflated life rafts tethered along the sides of the platform.
  • the platform is therefore tethered to the ship by lines which can be tautened by means of a winch and haul a platform, thrown overboard, into the ship's side and hold it in position there.
  • the stabilisation effect thereby obtained has, however, it's great limitations in heavy sea and rough weather, where the waves, the stream and the wind together still can manage frequently to throw the platform around in the water and drive it away from the ship's side.
  • the arrangement has little or no effect on the vertical movements of the platform caused by the motion of the waves.
  • the life-saving equipment comprises a counterweight for at a distance from the life-saving device to be hanged out over the ship's side, and a line-connection extending between the life-saving device and the counterweight and which is led over at least one guide, e.g.
  • the counterweight can have the form of one great solid weight having a predetermined weight as must be, of necessity, rather great in order to be able to counterbalance the weight of common life-saving devices such as evacuation platforms. Depending on the size and the capacity of these devices, the weight can sometimes attain several tons. However, it is not very expedient to carry such large weights occupying useful space on-board and reducing the bulk of cargo which the ship otherwise could carry.
  • this consists, according to the invention, of a bag of water to be taken in when the bag is wholly or partly submerged into the sea.
  • the bag can be made of a flexible material allowing the bag to be compactly packed and stored during normal navigation where the bag then is taking up very little space.
  • the net weight ' of the bag is furthermore in itself extremely modest, and the ship is not subject to any noticeable disadvantages by having to carry one or more of these such very light and spacesaving bags.
  • the necessary counterweight is obtained in the very moment where, in emergency, the bag is thrown overboard and is being filled with water.
  • the bag has shape of a long hose, one end of which is open and secured to the connecting-line while the other end is fitted with a non-return valve allowing the water to pass into the hose but not out of this.
  • This other end must furthermore be so heavy that it will be weighed down into the water when the hose is lowered sufficiently far down along the ship's side, whereby the water, via the non-return valve, will rise in the hose to the same level as exist in the water around the hose in the moment in question.
  • the life-saving device should sink, in relation to the concurrent position of the hose, this will be pulled up by means of the line-connection between the life-saving device and the hose, whereby, in the hose, at a height above the level of the surface of the surrounding water there will be standing a column of water as then functions as the counterweight prober.
  • the flexible wall of the hose can in advance be distended by means of a number of stiff rings placed crosswise in the hose at regular intervals in the longitudinal direction of this.
  • the hose can be collapsed like a concertina to be automatically pulled out when the hose is thrown out from the- ship's side.
  • the hose then from the very first has a shape allowing it quickly to be filled with the necessary quantity of water when submerged below the surface of the water.
  • these stiffening rings can, however, be an obstacle to the vertical movements of the hose as they may be inclined to catch, for instance, a fender on the ship, when the hose, in the rough sea, skids up and down the ship's side.
  • the hose could then be stuck, unable to fulfil it's purpose, or it can be torn into pieces causing the water in the water column to run out and the hose to lose it's weight.
  • the hose can instead be smooth along it's entire length, in which case, it furthermore can be coiled like a carpet, when flattened.
  • the hose quickly fills with water, when it is thrown into the sea. This filling could take more time when the hose beforehand is flattened than if is already is distended with stiffening rings.
  • a flattened hose will, however, open itself more quickly if it's flexible wall is internally coated with an elastic foam plastic or foam rubber, which in unloaded condition has a shape of a cylinder.
  • an elastic foam plastic or foam rubber which in unloaded condition has a shape of a cylinder.
  • the foam material furthermore has an open cell structure, it will be absorbent and absorb water itself, which thereby will be part of the total counterweight. This part functions independent of the height of the water column which constitutes the main part of the total weight of the hose above the water level.
  • the construction is therefore very reliable, as there, dependent of the thickness of the foam lining, always will be a certain amount of counterweight, even if the non-return valve fails or the bag is torn into pieces causing the column of water to run out.
  • the hose it may be expedient to replace the hose entirely with a block or a rod of foam plastic or foam rubber, which in that case could be reinforced with wire strands for taking the load of the water contents which the foam material would have absorbed.
  • This construction is exceptionally reliable, since it does not contain any mechanical parts that could fail or be damaged. The effect is achieved exclusively by means of the water absorbing qualities of the material.
  • the foam material is soft and accommodating so that persons, struggling in a rough sea around the counterweight, will not be injured even if they are hit by the counterweight during the heavy movements of this or if they are themselves thrown against the counterweight.
  • the life-saving device and the bag are thrown overboard, being attached to either ends of the connecting-line. If the life-saving device is e.g. an inflatable platform it will now be blown up automatically, and the bag will at the same time sink towards the bottom and is being filled with water.
  • the life-saving device is e.g. an inflatable platform it will now be blown up automatically, and the bag will at the same time sink towards the bottom and is being filled with water.
  • the life-saving equipment then could advantageously comprise a winch for, by means of the connecting-line, hauling the platform into the ship's side and pull the bag, now filled, somewhat up from the water, whereby the column of water in the bag above the surrounding water surface will act as a counterweight.
  • Fig. 1 shows schematically a life-saving device according to the invention used in connection with an inflatable evacuation platform and a stocking-like escape chute,
  • Fig. 2 shows the same, but in a smaller scale and with a double equipment
  • Fig. 3 shows a life-saving equipment according to the invention used in connection with a life-saving platform and an escape chute
  • Fig. 4 shows a life-saving equipment according to the invention used in connection with a very big inflatable life raft which, at the same time, functions as a platform, and a stocking-like escape hose,
  • Fig. 5 shows the same, but with an escape chute instead of an escape hose
  • Fig. 6 a, b, and c show schematically successive stages of the vertical movements which a life-saving platform and a counterweight bag carry out in rough sea, moving in counter phase in relation to each other,
  • Fig. 7 a and c show the same but in phase in relation to each other
  • Fig. 8 a and c show schematically successive stages of the vertical movements which a life-saving platform and a counterweight bag carry out in rough sea, moving in counter phase in relation to each other, and where a gearing in the connecting-line between the platform and the bag has been inserted, which halves the vertical movements of the counterweight in proportion to those of the platform,
  • Fig. 9 a and c show the same, but with a gearing which doubles the vertical movements of the bag in proportion to those of the platform,
  • Fig. 10 shows a first embodiment for a counterweight for the life-saving equipment according to the invention
  • Fig. 11 shows a non-return valve for the counterweight shown in fig. 10,
  • Fig. 12 shows another embodiment for a non-return valve for the counterweight shown in fig. 10,
  • Fig. 13 shows a cross-section, in perspective view, of a second embodiment for a counterweight for the life-saving equipment according to the invention
  • Fig. 14 shows fragmentarily, in perspective, a third embodiment for a counterweight for the life-saving equipment according to the invention.
  • Fig. 15 shows fragmentarily, in perspective, a fourth embodiment for a counterweight for the life-saving equipment according to the invention.
  • fig. 1 is very schematically shown a ship 1, which is in a rescue situation, where a life-saving equipment, generally designated by the reference number 2, has been brought into position along the ship's si e ' s.
  • the platform In order to make this operation to succeed with adequate reliability, the platform must be held close to the ship's side. If the platform is drifted by the normally heavy sea, in such situations, away from the ship's side there is a risk that the platform loses the connection with the chute whereby the rescue operation will be made difficult or fails. In the worst case, the persons who are to be rescued, could end up in the water where they run the risk of drowning.
  • a winch 11 is fitted to the ship for, by winding up a line 13, to tighten the lines 8a,b for thereby hauling the platform into the ship's side.
  • the line 13 is first running around a fixed pulley 14 and then around a horizontally movable pulley 15 and finishes in having the end fixed to a second horizontally movable pulley 16 around which the two platform lines 8a,b are running.
  • the water-filled bag will in this way make an efficient counterweight for the platform.
  • the bag arrangement is dimensioned in such a way that the upward directed pull in the platform always will be smaller than the weight of the platform.
  • the counterweight will, therefore, not be able to pull the platform out of the water, but only carry out the very important object of securing the platform lines 8a,b to be hold in such a tightened condition that the platform always during the rescue operation will be hold close against the ship's side.
  • the equipment will be thrown into the sea with slack lines.
  • the platform automatically starts to inflate while the bag is sinking, wholly or partly, down below the surface of the water. This process will take some minutes whereafter the lines will be tightened by means of the winch.
  • the platform is thereby hauled into the ship's side and the bag is hoisted up along the ship's side until the water column 18 is sufficiently high to impart the platform lines 8a,b the necessary pre-tension for constantly holding the platform in the wanted position close against the ship's side.
  • the life-saving equipment can, within the scope of the invention, be configured and used in many different ways in connection with rescue and evacuation of persons from a ship in distress.
  • the construction shown in fig. 2 is similar to the one shown in fig.l, but with the difference that there is no gearing and that there now is mounted a counterweight bag with belonging connecting-line on each side of the platform.
  • Each bag can advantageously be dimensioned with relatively smaller dimensions, and furthermore the reliability of the equipment will be increased, because the equipment is not completely put out of function, even if it should fail in one of the sides.
  • the life-saving equipment also is used in connection with a life-saving platform, but instead of a chute a skid 21 has been used, on which the persons who are to be rescued can skid down in order to get down onto the platform.
  • a skid 21 has been used, on which the persons who are to be rescued can skid down in order to get down onto the platform.
  • the life-saving equipment can be seen used for holding a very large, combined life-saving platform and fleet 22 close into the ship's side. Persons, who are to be rescued, can through the chute 7 skid down onto the combined platform and fleet, which, as is the case in the construction shown in fig. 2, is hold against the ship's side by a counterweight bag having connecting lines on each side of the combined platform and fleet.
  • the life-saving equipment shown in fig. 5 is similar to the one shown in fig. 4 with the difference that the large, combined life-saving platform and fleet now is hold close against the ship's side by only one counterweight bag having a connecting-line, and that the evacuation takes place via a chute 21.
  • the platform 4 and the bag 17 are moving vertically up and down in counter phase.
  • the gearing ratio in the connecting-line is 1:1.
  • the platform is in a trough of the waves, while the bag is in a wave crest.
  • the bag is filled, according to the above mentioned assumptions, to the same height as the surrounding water surface in the wave crest.
  • the bag can only be filled to a height above the level of the surrounding water and the function as a counterweight, if the bag, as mentioned earlier, first is thrown out in slack line and filled in advance, and then is hoisted up along the ship's side by means of the winch 11 to such a height that the water column in the bag is sufficiently large to impart the bag with the necessary counterweight.
  • Fig. 7a and b show the same configuration, but now with the platform 4 and the bag 17 in phase in the wave motion.
  • both the platform and the bag are on a wave crest.
  • the bag has been filled with water to the same height as the surrounding water surface in the wave crest.
  • Fig. 8a and b show the same configuration as shown in fig. 6a, b and c.
  • the platform 4 and the bag 17 are moving vertically in counter phase in the wave motion, but there is now inserted a gearing with a ratio of 2:1 in the connecting-line, and that means that the vertical movements of the platform are twice as big as those of the bag.
  • the platform 4 and the bag 17 are both in a wave trough.
  • the water in the bag is at the same height as the water surface in the wave trough.
  • Fig. 10 shows a first embodiment of a counterweight 17 for a life-saving equipment according to the invention.
  • the bag 17 has the shape of a long hose with a wall 24 made of a flexible material, for example canvas or plastic. At the top the bag is open and fitted with straps 26 for hanging up the bag. At the bottom the bag has furthermore a non-return valve 23 which allows water to stream into but not out of the bag.
  • the bag is furthermore distended by rings 25, which for example can be made of stainless steel such as wires that have the sufficient rigidity effect, but yet are able to yield without being damaged, if the bag should hit the ship's side.
  • the non-return valve which is best to be seen from fig. 11, comprises a bottom grating 27 which is fitted into a valve housing 30 to the flexible wall 24 of the bag.
  • a flexible membrane which can, for example, be made of rubber, and which is retained at it's centre by a supporting disc 29.
  • the grating is sufficiently heavy to pull at least the lower end of the bag into the water when, in an emergency, the bag is thrown overboard in a slack line. The water then will flow into the bag in the direction indicated by the arrows. When the bag is hoisted by tautening the lines by means of the winch on the ship, the water will, however, remain in the bag, as the membrane now, by the weight of the water, is forced tightly to abut the upper side of the grating.
  • Fig.12 shows an alternative embodiment for a non-return valve for a counterweight.
  • a number of openings 31 are formed at the bottom of flexible wall 24 of the bag, while the bag else is closed at the bottom.
  • a pendent skirt 32 which along the periphery is fixed to the flexible wall at an area above the openings.
  • FIG.13 In fig.13 can be seen another embodiment 33 for a bag for a life-saving equipment according to the invention.
  • the bag can therefore conveniently be coiled like a carpet with the flexible walls
  • This coiling can, for example, take place around a heavy rod 25 made of, for example, stainless steel which at the same time will function as a weight for pulling the lower end of the bag into the water in the initial phase of a rescue action.
  • This construction has the advantage that it is smooth at the outer side and therefore not inclined to stick to protrusions on the ship's side, such as the fenders of the ship.
  • the construction shown in fig.14 for a bag for a life-saving equipment according to the invention has, as in the previously mentioned embodiments, a flexible wall 37 made of canvas or plastic. But now the wall has furthermore an inner coating 38 of elastic foam material such as foam rubber or foam plastic, which in unloaded condition has a tubular shape.
  • This construction can also be coiled like a carpet around a heavy rod 39, and thus it takes up very little space, since the foam material can be compressed to a very small volume.
  • the foam material When the foam material furthermore has an open cell structure, it will work like a water absorbing sponge. Thereby a double securing of the system is obtained. Even if the bag itself should leak, it will still be loaded with water as the foam material has absorbed and will therefore continue to function in tightening the platform lines such that the platform is hold close against the ship's side.
  • the bag can alone consist of a foam material with cast in reinforcing strands, or the counterweight can, as shown in fig.15, have the shape of a long rod 40, in cross-section for example rectangular with cast in reinforcing strands 41 for transferring the load from a water-drenched foam material to the straps 26.
  • This construction can also be coiled like a carpet around a heavy rod 42 for the purpose of pulling it's end down under the surface of the water.
  • the counterweight is described as a single unit, for example a bag.
  • a counterweight can, however, advantageously in some cases be made up of two or more bags in one bunch. Thereby a greater reliability will be obtained as the effect of the counterweight essentially is maintained even if one single bag should fail, for example leak.
  • Another advantage of such an arrangement is that the bags can be manufactured in standard in a predetermined size, and that the counterweight necessary for a specific application then can be formed by using the appropriate number of standard bags as is corresponding to that weight.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Emergency Lowering Means (AREA)

Abstract

Equipement de survie (2) servant à l'évacuation et au sauvetage de personnes se trouvant p. ex. à bord d'un navire faisant naufrage (1), comportant une plate-forme flottante de survie, p. ex. gonflable (4), pouvant être mise à l'eau sur un côté du navire pour recueillir les personnes à sauver ainsi qu'un sac allongé (17) fait d'un matériau flexible (p. ex. toile ou plastique) relié à la plate-forme (4) par un filin (8a, b; 13 et 19) passant autour de poulies (10a, b; 14; 15; 16 et 20) solidaires du navire. Le sac (17), ouvert au sommet, est muni au fond d'une soupape de non-retour (27) permettant à l'eau d'y pénétrer mais non d'en sortir. Lors de la phase initiale de l'opération de sauvetage, l'équipement est largué à la mer filin non tendu et la plate-forme (4) se gonfle automatiquement tandis que l'extrémité inférieure du sac (17), au moins, s'enfonce dans l'eau et s'en remplit. La plate-forme est ensuite halée vers le bord (3) du navire à l'aide d'un treuil (11), tandis que le sac (17) rempli d'eau est hissé le long du bord. Le sac sert alors de contrepoids pour raidir les filins (8a et b) de la plate-forme qui se trouve ainsi amarrée en sécurité au bord du navire pour permettre aux personnes à sauver de s'évacuer par des toboggans (7). Les dimensions des sacs sont calculées pour que le contrepoids soit suffisant pour maintenir la plate-forme (4) fermement contre le navire sans toutefois dépasser une limite telle que la charge risque de faire chavirer la plate-forme.
PCT/DK1995/000222 1994-06-17 1995-06-07 Equipement de survie WO1995035233A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU26695/95A AU2669595A (en) 1994-06-17 1995-06-07 A life-saving equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK71494 1994-06-17
DK0714/94 1994-06-17

Publications (1)

Publication Number Publication Date
WO1995035233A1 true WO1995035233A1 (fr) 1995-12-28

Family

ID=8096701

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1995/000222 WO1995035233A1 (fr) 1994-06-17 1995-06-07 Equipement de survie

Country Status (2)

Country Link
AU (1) AU2669595A (fr)
WO (1) WO1995035233A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003018396A2 (fr) * 2002-04-04 2003-03-06 Viking Life-Saving Equipment A/S Amarrage d'une unite flottable au flanc d'un navire
WO2005021371A1 (fr) * 2003-08-29 2005-03-10 Viking Life-Saving Equipment Norge As Dispositif d'un systeme d'evacuation
EP1829781A3 (fr) * 2006-03-02 2011-02-16 Viking Life-Saving Equipment A/S Système d'amarrage pour unité flottable
EP3498588A1 (fr) * 2014-01-16 2019-06-19 Survitec Group Limited Agencement de navigation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK163725B (da) * 1990-01-24 1992-03-30 Nordisk Gummibaadsfabrik Evakueringssystem
NO173369B (no) * 1988-12-08 1993-08-30 Selantic Ind As Redningsarrangement
WO1994001324A1 (fr) * 1992-07-10 1994-01-20 Selantic Industrier A/S Ameliorations apportees a des radeaux de sauvetage pneumatiques sur des bateaux

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO173369B (no) * 1988-12-08 1993-08-30 Selantic Ind As Redningsarrangement
DK163725B (da) * 1990-01-24 1992-03-30 Nordisk Gummibaadsfabrik Evakueringssystem
WO1994001324A1 (fr) * 1992-07-10 1994-01-20 Selantic Industrier A/S Ameliorations apportees a des radeaux de sauvetage pneumatiques sur des bateaux

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003018396A2 (fr) * 2002-04-04 2003-03-06 Viking Life-Saving Equipment A/S Amarrage d'une unite flottable au flanc d'un navire
WO2003018396A3 (fr) * 2002-04-04 2004-03-04 Viking Life Saving Equip As Amarrage d'une unite flottable au flanc d'un navire
US7159527B2 (en) 2002-04-04 2007-01-09 Viking Life-Saving Equipment A/S Mooring of a floating unit to a vessel side
WO2005021371A1 (fr) * 2003-08-29 2005-03-10 Viking Life-Saving Equipment Norge As Dispositif d'un systeme d'evacuation
EP1829781A3 (fr) * 2006-03-02 2011-02-16 Viking Life-Saving Equipment A/S Système d'amarrage pour unité flottable
EP3498588A1 (fr) * 2014-01-16 2019-06-19 Survitec Group Limited Agencement de navigation
US10549825B2 (en) 2014-01-16 2020-02-04 Survitec Group Limited Survival craft
US11167823B2 (en) * 2014-01-16 2021-11-09 Survitec Group Limited Survival craft
EP3498588B1 (fr) 2014-01-16 2022-03-02 Survitec Group Limited Agencement de navigation

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