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Capsizing

January 06, 2023

"Capsize" redirects here. For other uses, see Capsize (disambiguation).
"Righting" redirects here. For the reflex, see Righting reflex.

Capsizing or keeling over occurs when a boat or ship is rolled on its side or further by wave action, instability or wind force beyond the angle of positive static stability or it is upside down in the water. The act of recovering a vessel from a capsize is called righting. Capsize may result from broaching, knockdown, loss of stability due to cargo shifting or flooding, or in high speed boats, from turning too fast.

Seawise University capsized after being gutted by fire in 1972

If a capsized vessel has enough flotation to prevent sinking, it may recover on its own in changing conditions or through mechanical work if it is not stable inverted. Vessels of this design are called self-righting.

Small vessels

 
Righting a capsized Laser sailing dinghy by standing on the daggerboard

In dinghy sailing, a practical distinction can be made between being knocked down (to 90 degrees; on its beam-ends, figuratively) which is called a capsize, and being inverted, which is called being turtled. Small dinghies frequently capsize in the normal course of use and can usually be recovered by the crew. Some types of dinghy are occasionally deliberately capsized, as capsizing and righting the vessel again can be the fastest means of draining water from the boat.

Capsizing (but not necessarily turtling) is an inherent part of dinghy sailing. It is not a question of "if" but a question of "when".[1] For those who do not want the experience, a keelboat monohull has physics on its side.[1][2] But even yachts can capsize and turtle in extraordinary conditions, so design considerations are important.[2] Such events can overcome skill and experience; boats need to be appropriate for foreseeable conditions.[3]

 
A kayak roll, after intentional capsizing

A capsized kayak may be righted with a roll or eskimo rescue. As long as the kayaker knows how to react, the water is not too shallow, and the location is not close to dangers that require evasive action by the kayaker – which cannot be taken while capsized – capsizing itself is usually not considered dangerous. In whitewater kayaking, capsizing occurs frequently and is accepted as an ordinary part of the sport.[citation needed] Kayak rolling, in which paddlers intentionally capsize and right themselves (in synchrony, as many times as possible in a given interval, or in as many different ways as possible) is also a competitive sport, especially in Greenland.

Sailing vessels' "capsize ratio" is commonly published as a guideline for zones of safe operation — less than 2.0 means as a rule-of-thumb suitability for offshore navigation. However its crude nature of displacement divided by a vessel's beam (breadth) (albeit with a constant multiplied to provide an average assessment), means thorough assessment of ship stability, immersibility and buoyancy involves other factors to address the relevant risks posed by waves, tides, weather and occurrences such as damage and collision.

Large vessels

In a storm, even large vessels may be rolled by being hit broadside by a large wave or swell or "pitch poled" stem over stern in extreme waves. This is normally catastrophic for larger ships, and smaller yachts can be dismasted (i.e., lose their masts and rigging) due to the drag as the boat is forced to roll over.

A ship that sustains a hole or crack ('is holed') may capsize.[4] This is the working of torpedo and naval mine warfare. In 2012 the very large cruise ship Costa Concordia was holed and lost her propulsion by a mapped rock near the shallows, and drifted further where she partially sank, resting towards one side with most of her structure out of the water. This was not a capsize as her bottom was only partly exposed; rather this was a partial sinking. Fixing a hole is called plugging.

Otherwise a vessel in largely upright position which capsizes has suffered too much water to enter in places normally above the waterline, and which may be caused by poor manoeuvering, overloading (see Plimsoll Line) or poor weather. As for holes, bailing may be carried out – removal of water aboard such as with a bilge pump, self or hand bailer or buckets. At the stage of sinking where its buoyancy is deemed critical, the ship is unlikely to upright nor able to right itself such that stability and safety will be compromised even if the vessel is righted — a decision is made to abandon ship and any ultimate salvage may entail firm grounding and re-buoyancy pumps. Among ship types, a roll-on-roll-off (RORO or ro-ro) ship is more prone to capsizing as it has large open car decks near the waterline. If the watertight car-deck doors fail through damage or mismanagement (as in the partial sinking of MS Herald of Free Enterprise where the doors were accidentally left open, and as in one of the largest peacetime maritime disasters when MS Estonia sank off of the Archipelago Sea in Finland), water entering the car-deck is subject to the free surface effect and may cause a capsize. As a RORO ferry rolls, vehicles can break free and slide down if not firmly secured, adversely altering the ship's centre of gravity, accelerating the roll, and possibly turning an otherwise recoverable roll into a capsize.

Competition

 
A team at the 2005 ISAF Team Racing World Championship narrowly avoids capsizing.

In competitive yacht racing, a capsized boat has certain special rights as it cannot maneuver. A boat is deemed capsized when the mast is touching the water; when it is fully inverted, it is said to have turned turtle or turtled.[5] Good racers can often recover from a capsize with minimal loss of time.

The capsize can result from extreme broaching, especially if the keel has insufficient leverage to tilt the vessel upright.

Motorlife boats are designed to be self-righting if capsized, but most other motorboats are not.

Training

 
Righting a capsized Hobie Cat
 
Practice: righting a sailing dinghy after a deliberate capsize on Wroxham Broad

Intermediate sailors are encouraged to capsize their dinghies in a safe location with supervision at least once to become acquainted with their boat's floating properties and the capsize process. The boat is then righted, bailed out, and the sails reset, so that in the event of an uncontrolled capsize, the boat and its occupants are familiar with the procedure and may recover.

Most small monohull sailboats can normally be righted by standing or pulling down on the centreboard, daggerboard (or bilgeboard in a scow) to lift the mast clear of the water. Depending on the design of the hull, the boat's righting moment will normally take effect once the mast is around 30 degrees from horizontal and help pull the boat vertical. Righting a catamaran that is lying on its side involves using a righting line fed over the upper hull. The crew stands on the lower hull and pulls back on the righting line. In small catamarans such as the Hobie 16 it is imperative that at least one crew member assumes this task as soon as possible as there is a chance that the boat will turtle and then become extremely difficult to recover without assistance.[6] Some monohulls and catamarans use a small flotation device mounted at the tip of the mast or mainsail to ensure that the craft cannot assume an inverted position, or at least that a fully inverted position is not stable (i.e. it would come to a position where the mast is lying on the surface of the water, which would be preferable to fully inverted).

In both cases, having a crew member lift the end of the mast out of the water may help speed the process, as the greatest challenge of righting a capsized boat is shedding the weight of the water from the sails. A helpful step, where possible (on a loose footed sail), is to disconnect the clew of the sail from the boom, which prevents the sail from scooping up water as the sail lifts out of the water. The bow of the capsized vessel should be pointed towards the wind so that when the sail starts to lift out of the water the wind can catch underneath the sail and help right the boat.

Care is taken not to let the boat swing all the way over and capsize on the other side, frequently with the crew on the bottom. This is more likely if the boat is not pointed into the wind.

Prevention

There is a wide range of technology that can be installed or strategically placed to prevent or deter a boat or ship from capsizing. The various technologies rely on inflating airbags also known as lift bags which increasing the vessel's buoyancy with the water. There are many steps a crew can take to reduce the chance of capsizing, such as distributing the weight evenly and taking care during windy weather.[7]

Yachts

Capsizing in yachts can occur when water is able to infiltrate the hull and decrease the vessels water and buoyancy leading to capsizing. Yachts can be deployed with a flotation system which is a series of strategically placed lift bags within the interior of the hull increasing the vessel's buoyancy and filling void space where water can collect, providing valuable time to remove the water, fix damage or evacuate.[8]

Large ships

When larger ships such as cargo ships and tankers capsize or sink not only is recovery not possible but great environment damage can occur from spillage of cargo.[9] Larger ships are being equipped with Surfacing System for Ship Recovery which is an inflatable device that is installed in the ballast water tank or within the hull of the vessel and can be deployed within seconds of an accident to stabilize the vessel and give more time for rescue and evacuation.[10]

Self-righting

  •  

    A crane capsizes a small coast guard vessel to test its righting ability

  •  

    A larger self-righting vessel's stability test. Note large deckhouse, which is almost the only part submerged when fully inverted.

  •  

    The Beeching-Peake SR (self-righting) lifeboat won an 1851 competition for improved lifeboat design. Drawings show large, high buoyancy tanks, and ballast.

  •  

    The Lizzie Porter is a Peake-class lifeboat, an early design of self-righting boat. Note the high, rounded buoyancy tanks at her bow and stern, and low sides amidships.

A vessel may be designated as "self-righting" if it is designed to be able to capsize then return to upright without intervention (with or without crew on board). The angle of vanishing stability, the angle of heel at which a vessel becomes unstable and does not bob back upright, does not exist; a self-righting boat will return to upright from any position, including completely upside-down. A self-righting vessel must be positively buoyant when swamped. There are three methods of making a vessel self-right: careful distribution of stationary weight and buoyancy, inflatable airbags, and movable ballast.[11]

A basic tool for calculating a vessel's stability is a static stability diagram, which plots the angle of heel on the horizontal axis and the righting lever (GZ) on the vertical axis. (see metacentric height for details). If the static stability curve never crosses the x-axis, the boat is not stable upside-down. This is not sufficient to built a boat with good stability at sea, as it neglects the effects of wind, waves, and human occupants, but it is a simple, powerful way to analyze the stability of a vessel.[11] See also primary stability and secondary stability.

Self-righting through distribution of weight and buoyancy requires the weight low-down, and the buoyancy high up. It is often accomplished with a self-sealing superstructure, such as the large deckhouses on modern rescue boats.[11]

Most small craft intended as lifeboats with rigid (rather than inflatable) hulls designed since about the middle of the twentieth century are self-righting.[citation needed]

Small radio-controlled boats may also self-right. This is particularly useful for racing.[12]

Notable capsizings

 
German battleship Tirpitz lying capsized in Tromsø fjord after the Operation Catechism air raid, attended by a salvage vessel.

See also

References

  1. ^ a b "Will I capsize?". Discover Boating. Retrieved 22 November 2013.
  2. ^ a b Dashew, Steve (8 January 2012). "Evaluating Stability and Capsize Risks for Yachts". Retrieved 22 November 2013.
  3. ^ Keilman, John (30 October 2011). "Report: Boat in deadly accident unfit for Mackinac race — Craft that capsized called too unstable for long competition in area prone to severe weather". Chicago Tribune. Retrieved 22 November 2013.
  4. ^ The Telegraph: The EU ignored years of expert warnings on cruise ship safety. Discussion of stability when large modern ships are holed
  5. ^ Rousmaniere, John. . US Sailing. Archived from the original (PDF) on 3 December 2013. Retrieved 19 November 2013.
  6. ^ (PDF). F-15 dinghy. Archived from the original (PDF) on 2 December 2013. Retrieved 18 November 2013.
  7. ^ "Boatkeep | Free resources for boat owners". boatkeep.com. Retrieved 2022-05-24.
  8. ^ "Underwater Lift Bags & Yacht Floatation |". www.turtlepac.com. Retrieved 13 January 2017.
  9. ^ . www.su-sy.eu. Archived from the original on 19 April 2017. Retrieved 31 January 2017.
  10. ^ Munoz, Gabriella. "New Airbags Will Save Ships From Sinking". ScienceAlert. Retrieved 31 January 2017.
  11. ^ a b c Akyıldız, Hakan; Şimşek, Cemre (2016). (PDF). GiDB-DERGi (6): 41–54. Archived from the original (PDF) on 23 September 2019. Retrieved 21 June 2019.
  12. ^ "Best Self Righting RC Boat: Top Picks for 2019". Radio-controlled hobby review. 21 September 2018.
  13. ^ Blueprint for Disaster. Season 2. Episode 3.
  14. ^ Schreck, Adam (1 July 2009). "Up to 30 feared dead after ship capsizes off Qatar capital Doha in rough Persian Gulf waters". Washington Examiner. Associated Press. Retrieved 2 July 2009.[permanent dead link]

External links

 
Wikimedia Commons has media related to Capsizing.
 
Look up capsizing in Wiktionary, the free dictionary.
  • Hallett, Peter (1 August 2013). "E-SCOW capsizing after duel with Kiwi 35 Racing sailboat" (video). Bellingham Bay: YouTube. Archived from the original on 2021-12-22. Retrieved 7 December 2013.
  • "Hobie Bob Installation" (video). YouTube. Archived from the original on 2021-12-22. Retrieved 21 November 2013.
  • "How to Right a Capsized and Turtled Flying Scot Sailboat" (video). YouTube. Retrieved 19 November 2013.[dead YouTube link]
  • Lebigot, Sebastien. "Righting a capsized catamaran (Hobie Cat speed)" (video). YouTube. Archived from the original on 2021-12-22. Retrieved 19 November 2013.

January 06, 2023
capsizing, capsize, redirects, here, other, uses, capsize, disambiguation, righting, redirects, here, reflex, righting, reflex, keeling, over, occurs, when, boat, ship, rolled, side, further, wave, action, instability, wind, force, beyond, angle, positive, sta. Capsize redirects here For other uses see Capsize disambiguation Righting redirects here For the reflex see Righting reflex Capsizing or keeling over occurs when a boat or ship is rolled on its side or further by wave action instability or wind force beyond the angle of positive static stability or it is upside down in the water The act of recovering a vessel from a capsize is called righting Capsize may result from broaching knockdown loss of stability due to cargo shifting or flooding or in high speed boats from turning too fast Seawise University capsized after being gutted by fire in 1972 If a capsized vessel has enough flotation to prevent sinking it may recover on its own in changing conditions or through mechanical work if it is not stable inverted Vessels of this design are called self righting Contents 1 Small vessels 2 Large vessels 3 Competition 4 Training 5 Prevention 5 1 Yachts 5 2 Large ships 6 Self righting 7 Notable capsizings 8 See also 9 References 10 External linksSmall vessels Edit Righting a capsized Laser sailing dinghy by standing on the daggerboard In dinghy sailing a practical distinction can be made between being knocked down to 90 degrees on its beam ends figuratively which is called a capsize and being inverted which is called being turtled Small dinghies frequently capsize in the normal course of use and can usually be recovered by the crew Some types of dinghy are occasionally deliberately capsized as capsizing and righting the vessel again can be the fastest means of draining water from the boat Capsizing but not necessarily turtling is an inherent part of dinghy sailing It is not a question of if but a question of when 1 For those who do not want the experience a keelboat monohull has physics on its side 1 2 But even yachts can capsize and turtle in extraordinary conditions so design considerations are important 2 Such events can overcome skill and experience boats need to be appropriate for foreseeable conditions 3 A kayak roll after intentional capsizing A capsized kayak may be righted with a roll or eskimo rescue As long as the kayaker knows how to react the water is not too shallow and the location is not close to dangers that require evasive action by the kayaker which cannot be taken while capsized capsizing itself is usually not considered dangerous In whitewater kayaking capsizing occurs frequently and is accepted as an ordinary part of the sport citation needed Kayak rolling in which paddlers intentionally capsize and right themselves in synchrony as many times as possible in a given interval or in as many different ways as possible is also a competitive sport especially in Greenland Sailing vessels capsize ratio is commonly published as a guideline for zones of safe operation less than 2 0 means as a rule of thumb suitability for offshore navigation However its crude nature of displacement divided by a vessel s beam breadth albeit with a constant multiplied to provide an average assessment means thorough assessment of ship stability immersibility and buoyancy involves other factors to address the relevant risks posed by waves tides weather and occurrences such as damage and collision Large vessels EditIn a storm even large vessels may be rolled by being hit broadside by a large wave or swell or pitch poled stem over stern in extreme waves This is normally catastrophic for larger ships and smaller yachts can be dismasted i e lose their masts and rigging due to the drag as the boat is forced to roll over A ship that sustains a hole or crack is holed may capsize 4 This is the working of torpedo and naval mine warfare In 2012 the very large cruise ship Costa Concordia was holed and lost her propulsion by a mapped rock near the shallows and drifted further where she partially sank resting towards one side with most of her structure out of the water This was not a capsize as her bottom was only partly exposed rather this was a partial sinking Fixing a hole is called plugging Otherwise a vessel in largely upright position which capsizes has suffered too much water to enter in places normally above the waterline and which may be caused by poor manoeuvering overloading see Plimsoll Line or poor weather As for holes bailing may be carried out removal of water aboard such as with a bilge pump self or hand bailer or buckets At the stage of sinking where its buoyancy is deemed critical the ship is unlikely to upright nor able to right itself such that stability and safety will be compromised even if the vessel is righted a decision is made to abandon ship and any ultimate salvage may entail firm grounding and re buoyancy pumps Among ship types a roll on roll off RORO or ro ro ship is more prone to capsizing as it has large open car decks near the waterline If the watertight car deck doors fail through damage or mismanagement as in the partial sinking of MS Herald of Free Enterprise where the doors were accidentally left open and as in one of the largest peacetime maritime disasters when MS Estonia sank off of the Archipelago Sea in Finland water entering the car deck is subject to the free surface effect and may cause a capsize As a RORO ferry rolls vehicles can break free and slide down if not firmly secured adversely altering the ship s centre of gravity accelerating the roll and possibly turning an otherwise recoverable roll into a capsize Competition Edit A team at the 2005 ISAF Team Racing World Championship narrowly avoids capsizing In competitive yacht racing a capsized boat has certain special rights as it cannot maneuver A boat is deemed capsized when the mast is touching the water when it is fully inverted it is said to have turned turtle or turtled 5 Good racers can often recover from a capsize with minimal loss of time The capsize can result from extreme broaching especially if the keel has insufficient leverage to tilt the vessel upright Motorlife boats are designed to be self righting if capsized but most other motorboats are not Training Edit Righting a capsized Hobie Cat Practice righting a sailing dinghy after a deliberate capsize on Wroxham Broad Intermediate sailors are encouraged to capsize their dinghies in a safe location with supervision at least once to become acquainted with their boat s floating properties and the capsize process The boat is then righted bailed out and the sails reset so that in the event of an uncontrolled capsize the boat and its occupants are familiar with the procedure and may recover Most small monohull sailboats can normally be righted by standing or pulling down on the centreboard daggerboard or bilgeboard in a scow to lift the mast clear of the water Depending on the design of the hull the boat s righting moment will normally take effect once the mast is around 30 degrees from horizontal and help pull the boat vertical Righting a catamaran that is lying on its side involves using a righting line fed over the upper hull The crew stands on the lower hull and pulls back on the righting line In small catamarans such as the Hobie 16 it is imperative that at least one crew member assumes this task as soon as possible as there is a chance that the boat will turtle and then become extremely difficult to recover without assistance 6 Some monohulls and catamarans use a small flotation device mounted at the tip of the mast or mainsail to ensure that the craft cannot assume an inverted position or at least that a fully inverted position is not stable i e it would come to a position where the mast is lying on the surface of the water which would be preferable to fully inverted In both cases having a crew member lift the end of the mast out of the water may help speed the process as the greatest challenge of righting a capsized boat is shedding the weight of the water from the sails A helpful step where possible on a loose footed sail is to disconnect the clew of the sail from the boom which prevents the sail from scooping up water as the sail lifts out of the water The bow of the capsized vessel should be pointed towards the wind so that when the sail starts to lift out of the water the wind can catch underneath the sail and help right the boat Care is taken not to let the boat swing all the way over and capsize on the other side frequently with the crew on the bottom This is more likely if the boat is not pointed into the wind Prevention EditThere is a wide range of technology that can be installed or strategically placed to prevent or deter a boat or ship from capsizing The various technologies rely on inflating airbags also known as lift bags which increasing the vessel s buoyancy with the water There are many steps a crew can take to reduce the chance of capsizing such as distributing the weight evenly and taking care during windy weather 7 Yachts Edit Capsizing in yachts can occur when water is able to infiltrate the hull and decrease the vessels water and buoyancy leading to capsizing Yachts can be deployed with a flotation system which is a series of strategically placed lift bags within the interior of the hull increasing the vessel s buoyancy and filling void space where water can collect providing valuable time to remove the water fix damage or evacuate 8 Large ships Edit When larger ships such as cargo ships and tankers capsize or sink not only is recovery not possible but great environment damage can occur from spillage of cargo 9 Larger ships are being equipped with Surfacing System for Ship Recovery which is an inflatable device that is installed in the ballast water tank or within the hull of the vessel and can be deployed within seconds of an accident to stabilize the vessel and give more time for rescue and evacuation 10 Self righting Edit A crane capsizes a small coast guard vessel to test its righting ability A larger self righting vessel s stability test Note large deckhouse which is almost the only part submerged when fully inverted The Beeching Peake SR self righting lifeboat won an 1851 competition for improved lifeboat design Drawings show large high buoyancy tanks and ballast The Lizzie Porter is a Peake class lifeboat an early design of self righting boat Note the high rounded buoyancy tanks at her bow and stern and low sides amidships A vessel may be designated as self righting if it is designed to be able to capsize then return to upright without intervention with or without crew on board The angle of vanishing stability the angle of heel at which a vessel becomes unstable and does not bob back upright does not exist a self righting boat will return to upright from any position including completely upside down A self righting vessel must be positively buoyant when swamped There are three methods of making a vessel self right careful distribution of stationary weight and buoyancy inflatable airbags and movable ballast 11 A basic tool for calculating a vessel s stability is a static stability diagram which plots the angle of heel on the horizontal axis and the righting lever GZ on the vertical axis see metacentric height for details If the static stability curve never crosses the x axis the boat is not stable upside down This is not sufficient to built a boat with good stability at sea as it neglects the effects of wind waves and human occupants but it is a simple powerful way to analyze the stability of a vessel 11 See also primary stability and secondary stability Self righting through distribution of weight and buoyancy requires the weight low down and the buoyancy high up It is often accomplished with a self sealing superstructure such as the large deckhouses on modern rescue boats 11 Most small craft intended as lifeboats with rigid rather than inflatable hulls designed since about the middle of the twentieth century are self righting citation needed Small radio controlled boats may also self right This is particularly useful for racing 12 Notable capsizings Edit German battleship Tirpitz lying capsized in Tromso fjord after the Operation Catechism air raid attended by a salvage vessel Mary Rose 19 July 1545 capsized and sank English carrack 380 dead Vasa 10 August 1628 Swedish warship maiden voyage 30 50 dead RMS Empress of Ireland 19 May 1914 capsized and sank in the Saint Lawrence River after colliding with the Norwegian collier Storstad 1 012 dead SS Eastland 1915 excursion boat 845 dead greatest loss of life on the Great Lakes SMS Blucher 1915 German armoured cruiser sunk at the Battle of Dogger Bank 1915 770 dead SMS Szent Istvan 1918 Austro Hungarian capital warship torpedoed 89 dead Scuttling of the German fleet at Scapa Flow 21 June 1919 several German battleships and battlecruisers scuttled USS Oklahoma BB 37 7 December 1941 U S battleship torpedoed at Pearl Harbor 415 missing or killed USS Lafayette AP 53 formerly SS Normandie 9 February 1942 at dock while being converted to a troopship one casualty Japanese aircraft carrier Ryujō 24 August 1942 sunk by American air attacks 120 casualties Japanese battleship Kirishima 15 November 1942 212 casualties Japanese battleship Musashi 24 October 1944 sunk during the Battle of Sibuyan Sea 1 023 casualties Japanese battleship Fusō 25 October 1944 sunk during the Battle of Surigao Strait approximately 1890 casualties Japanese battleship Yamashiro 25 October 1944 sunk during the Battle of Surigao Strait 1 626 casualties German battleship Bismarck 27 May 1941 Sunk after sinking HMS Hood over 2000 casualties HMS Barham 04 on the 25th of November 1941 torpedoed four times and rolled over to port within 4 minutes before exploding 862 dead German battleship Tirpitz 12 November 1944 sunk by Royal Air Force bombers over 1 000 casualties Japanese aircraft carrier Shinano 29 November 1944 sunk by American submarine USS Archerfish SS 311 1 435 casualties Japanese battleship Yamato 7 April 1945 2 475 dead HMS Prince of Wales 53 10 December 1941 Attacked and sunk by enemy Japanese aircraft 328 dead HMS Repulse 1916 10 December 1941 Attacked and sunk by Japanese aircraft 517 dead HMS Royal Oak 08 14 October 1939 Torpedoed and sunk by German U Boat U 47 1938 835 dead Soviet battleship Novorossiysk 29 October 1955 608 dead SS Andrea Doria 25 July 1956 killing 46 passengers at the area of the impact with the MS Stockholm HMS Coventry 25 May 1982 killing 19 sailors sunk by 3 1000 lbs bombs dropped from Argentine A 4 Skyhawks MS Herald of Free Enterprise 6 March 1987 bow door left open killing 193 passengers MS Jan Heweliusz 14 January 1993 leaving 54 people dead MS Estonia 28 September 1994 killing 852 passengers MS Express Samina 26 September 2000 82 dead MV Le Joola 26 September 2002 Senegalese ferry at least 1 863 dead MV Rocknes 19 January 2004 Dutch rock discharge vessel capsized south of Bergen Norway killing 18 of 30 crew 13 MS al Salam Boccaccio 98 3 February 2006 resulting in an estimated 1 020 dead MV Demas Victory 30 June 2009 which sails to offshore oil and gas platforms capsized off the coast of Qatari capital city of Doha 14 Costa Concordia 13 January 2012 ran aground off the island of Giglio western Italy with about 4 200 aboard all except 32 saved Sewol 16 April 2014 approximately three kilometres off Gwanmae Island South Jeolla Province South Korea with over 450 people on board 304 dead 172 survivors Dongfang Zhi Xing 1 June 2015 large vessel capsized and sank cruising the Yangtze River in Jianli Hubei thunderstorm downburst with high winds with 442 dead and 12 survivors MV Sinar Bangun 18 June 2018 at Lake Toba North Sumatra Indonesia 3 known dead and 164 presumed so 23 known survivors Overloaded and improper three deck use design caused high uprighting moment centre of gravity MV Phoenix 5 July 2018 hit fellow tourist boat MV Serenita both capsized and sank in a sudden storm near Phuket Thailand Double decker 41 dead and 15 missing 49 survivors smaller boat carried 42 passengers all saved MV Nyerere 20 September 2018 ferry shuttling people and cargo on Lake Victoria Tanzania due to pilot distraction when docking a sharp turn and overloading 227 known dead passenger log lost tens survived MV Golden Ray 8 September 2019 automobile carrier in St Simons Sound off the US state of Georgia improperly ballasted and heeled over during sharp turn All 23 crewmembers and the harbor pilot were rescued Orient Queen 5 August 2020 at Beirut as a result of nearby 4 August ammonium nitrate explosion See also Edit Sports portalGlossary of nautical terms keeling over Limit of positive stability Seakeeping also called Seaworthiness Seamanship Turtling sailing a full capsize in which the mast and sail are fully submerged References Edit a b Will I capsize Discover Boating Retrieved 22 November 2013 a b Dashew Steve 8 January 2012 Evaluating Stability and Capsize Risks for Yachts Retrieved 22 November 2013 Keilman John 30 October 2011 Report Boat in deadly accident unfit for Mackinac race Craft that capsized called too unstable for long competition in area prone to severe weather Chicago Tribune Retrieved 22 November 2013 The Telegraph The EU ignored years of expert warnings on cruise ship safety Discussion of stability when large modern ships are holed Rousmaniere John Tests of Sailor Retrieval Capsize Recovery and Entrapment US Sailing Archived from the original PDF on 3 December 2013 Retrieved 19 November 2013 Fusion Capsize Manual PDF F 15 dinghy Archived from the original PDF on 2 December 2013 Retrieved 18 November 2013 Boatkeep Free resources for boat owners boatkeep com Retrieved 2022 05 24 Underwater Lift Bags amp Yacht Floatation www turtlepac com Retrieved 13 January 2017 SuSy Surfacing System for Ship Recovery www su sy eu Archived from the original on 19 April 2017 Retrieved 31 January 2017 Munoz Gabriella New Airbags Will Save Ships From Sinking ScienceAlert Retrieved 31 January 2017 a b c Akyildiz Hakan Simsek Cemre 2016 Self righting boat design PDF GiDB DERGi 6 41 54 Archived from the original PDF on 23 September 2019 Retrieved 21 June 2019 Best Self Righting RC Boat Top Picks for 2019 Radio controlled hobby review 21 September 2018 Blueprint for Disaster Season 2 Episode 3 Schreck Adam 1 July 2009 Up to 30 feared dead after ship capsizes off Qatar capital Doha in rough Persian Gulf waters Washington Examiner Associated Press Retrieved 2 July 2009 permanent dead link External links Edit Wikimedia Commons has media related to Capsizing Look up capsizing in Wiktionary the free dictionary Capsize formula for displacement sailboats Hallett Peter 1 August 2013 E SCOW capsizing after duel with Kiwi 35 Racing sailboat video Bellingham Bay YouTube Archived from the original on 2021 12 22 Retrieved 7 December 2013 Hobie Bob Installation video YouTube Archived from the original on 2021 12 22 Retrieved 21 November 2013 How to Right a Capsized and Turtled Flying Scot Sailboat video YouTube Retrieved 19 November 2013 dead YouTube link Lebigot Sebastien Righting a capsized catamaran Hobie Cat speed video YouTube Archived from the original on 2021 12 22 Retrieved 19 November 2013 Retrieved from https en wikipedia org w index php title Capsizing amp oldid 1115225817, wikipedia, wiki, book, books, library,

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