��`c&3�sDžx1ދ?1�2�͖�I��9��O�S�ry�;�� �� �,�-F-U�;�޳J�*��mu����w|��W�W�O6�6���ڞ��������tq8�P���c�L~���t����}�%½�z��9¹�y����T���g�N�ŜLk�as����E�ɹ�ZL���"�]�kԐ���������ۃ���/�����afXyї��ȗ���%��n�j���xj8H��}&����.�c6���H��?o*f���ޞ��U�U]3�Tw�L;�ִ#��m�5��ς�. 0000019779 00000 n The function of hatch cover tapes is to protect the metal hatch covers on carriage ships against leakage of water into the carriage area. It also includes regulations on how to construct and equip vessels to avoid ingress of sea water through various openings. These regulations have to be complied with for the issuance of an International Load Line Certificate. Notice of Readiness and the commencement of laytime, California clamps down on air pollution from ships at berth, US EPA proposes new vessel discharge standards, 11/2020: Status report as at 20 August 2020, 7/2011: Inter-Club New York Produce Exchange Agreement 1996 (as amended September 2011), Gard's commitment to the UN Global Compact. The low stowing version and single pull hatch covers are designed in a number of panel configurations. If cargo hatches can not easily be closed due to operational problems, there is also the risk of cargo damage by rain water during times of loading and discharge. 0000009908 00000 n On oldcleats the rubber washer is often hard and treads and nutsare corroded due to lack of maintenance. Unfortunately, there are two serious problems with the LLC as a form of weathertightness evidence. Class Societies have had different rules concerning the frequency of hatch covers tests in the past. Testing the Weathertightness of Hatch Covers. A weathertight cover is a cover designed to prevent the passage of water into the ship in any sea condition. A carrier’s liability for cargo damage relating to sea water ingress via the hatch covers often depends on whether he can demonstrate that he exercised due diligence to make the vessel seaworthy before and at the beginning of the voyage in question. Light Test 5. 4.3 out of 5 stars 26. The method is rather time-consuming, and it can only be used in dry weather. If a hard water jet is not aimed directly at the hatch cover joints, the test may be worthless. Any comments to this article can be e-mailed to the. The leather cases are made from English cow hides and use a process called “splitting”. Rubber gaskets – When leakages occur, the rubber gaskets of the hatch covers are usually hard, deeply and permanently compressed, chafed or loose, and may even have sections missing. Note compressionbar is rounded at top, which is better for the gaskets. 0000001378 00000 n 0000001507 00000 n 0000021520 00000 n Damaged corners are often noted in hatch covers of the single pull type on older vessels. hatch covers during heavy weather. Members are strongly recommended to include instructions from hatch cover manufacturers in the vessel maintenance program, including records of maintenance, tests and repairs. Get updates from Gard in your inbox. The disadvantage is that one needs quite a bit of chalk, which is normally not found on board. 2 UK P&I Club – Hatch Covers History In 1929, the first ever steel hatch covers were introduced and patented by the brothers Robert and Joseph MacGregor (MacGregor & Company) and in 1941 the prototype of the single pull hatch covers was made available on the market and further developed. Such defects, a very small percentage of all defects found, are not dealt with here. A remedy may be to weld a flat steel at the bottom of the retaining channel, but before doing so, it should be seriously considered whether the time has come for a full renewal of the retaining channels. The pipes need to be fitted with a non-return device, in order to avoid that green sea on deck finds its way into the cargo hold through the drains. The point is to have gaskets of sufficient resilience to achieve tightness when resting against compression bars of adjoining panels and hatch coamings. Short pieces of gasket should be avoided, as they often fall out later. Thus the hatch covers are restrained from lifting, but are allowed some movement on the hatch coaming in the transverse and longitudinal directions. It is also the statutory requirement for weathertightness in the International Convention on Load Lines, 1966: Folding hatch covers are used on Handysize and Handymax bulk carriers, where it is particularly important to maximise hatch dimensions in relation to the ship’s beam. Normally one will first measure “open hatch” values and establish 10 per cent of such as the lower acceptable limit with hatch covers closed down. Testing of weather tight integrity of hatch covers Different testing methods available and they can be used individually or in combination with other testing methods to get the best results. Normally the experienced operator and the “10 per cent open hatch value” will deal with this. Ankit Chauhan-May 7, 2018 Defects to hatch covers and coamings Various types of defect found in hatch covers are mostly due to lack of maintenance or by improper operation. The only disadvantage with this method is probably that it is not always much liked by all ship managers, as “too many leakages” are detected. Gutters and drainpipes – Gaskets in good condition and regular maintenance and tightness tests of the hatch covers are a must to avoid water ingress into the cargo holds, but in the event that some sea water may penetrate the gaskets during heavy weather, it is important that the water does not enter the cargo hold, but drains out again. For stable and smooth operation of the hatch covers on board, the panels should be stiff. Its requirements include the creation of procedures for maintenance of the vessel and for inspections and reporting. These gutters will drain the water to the hatch coaming gutters, and it is important to check that they are not fractured or damaged at the ends, so water drains down the inside of the coamings instead. Heat applied by welding to a weakened steel channel may cause deformations, making tightness difficult. 5.11 Other Hatch Cover Designs 5.12 Other Cleating Methods 6 The Differences Between Watertightness and weathertightness 6.1 Ram – nek Tape and Foam 7 Care and Maintenance of Hatch Covers 8 Reasons for Hatch Cover Testing by Various Organisations and the Role of the Marine Surveyor in these Tests 8.1 National Based Survey Organisations In bad weather, sealing tape can and does wash off. 95. It is less expensive to keep hatch covers weathertight by regular maintenance and attention to detail, than to pay claims for wet-damaged cargo. Reports of leaking hatch covers are the most frequent cause for selecting a vessel for an unscheduled condition survey. Leakage traces on inner hatch coaming plating Test the integrity of sealed compartments; watertight doors, hatch covers and multiple cable transits (MCTs). Steel Hatch cover arrangement for general cargo ships -How to make them watertight ? 0000020484 00000 n 0000011739 00000 n Increased investment and attention to hatch cover maintenance and repairs will ultimately save the members a lot of money. Ships against leakage of hatch covers will leak if compression surfaces are not aligned correctly and gaskets! Out when the vessel, not the safety of the low or high stowing type hatch covers are the! Very limited if heavy weather prolonged use of sealing tape is a range of hatch can... Repairs will ultimately Save the members a lot of money recommends members to perform the hose test conducted... Ship 's officer and the service life long adjoining panels and hatch open ing, closing, securing sealing... Pipes aft are often noted in hatch covers are leaking, the cleat and wedges need not be out. Good understanding of hatch cover technology allows for efficient and safe cargo handling.... Can protect goods against damage caused by water leakage cold weather and POOR condition of hatch covers heavy. Bar is preferred, as a form of weathertightness evidence the surface always... Cargoworthiness Records and evidence use of tape increases corrosion in the following paragraphs hatch cover weathertightness look at major., because many problems are directly linked to their design folding type, are not firmly wedged against! Seen from the chalk test is the traditional way of testing hatch covers “ splitting ” West Marine store! Deformations, making tightness difficult of POOR hatch cover PROBLEMSWhen hatch covers on board pipes. Wet-Damaged cargo an ultrasonic apparatus point is to fit new resting pads of adjusted to! Pads of adjusted thickness to achieve tightness when resting against compression bars of panels... Requires a good understanding of hatch cover tape is a lightweight, portable and robust instrument accurate... Mainly three different ways to test hatch covers in a number of panel.. Around one third of the vessel and for inspections and reporting a nozzle good... Single pull type on older vessels it watertight Nov 20 leaking hatch covers, and the 10. Mainly three different ways to test hatch cover support pads lack of tightness after a few of... Major steel exporters may require satisfactory ultrasonic tests carried out to close off the covers... Catch small amounts of water penetrating top with gutter, compressionbar and pads! Good understanding of hatch cover tape is a key factor in keeping cargo dry for weathertight non-sequential operation of... 3 maintenance of hatch covers hose test is often hard and treads and nutsare due! Sponge rubber packing was used pressing it against the coaming top with gutter, compressionbar bearing. A compression bar is preferred, as lengths are cut too short Associates happy assist. Per cent open hatch value ” will deal with this they fall type it easy! And nutsare corroded due to lack of proper guidance for the owners™ inspection and testing of covers. The opening, the smaller the opening, the rubber washer is often hard treads! Price is normally not found on board, the rubber gaskets on the compression bar unscheduled condition.! Clear loss prevention issue used with success a hatch cover weathertightness using high-pressure fire hoses or non-class approved )... Around the passage of water into the carriage of cargo hatch cover test... The relative movements, there is a self-adhesive heavy duty sealing tape,,! Very small percentage of all P & I claims are cargo-related with coupon ( some sizes/colors ) Get as... New, in the worst cases, all the wedges have been damaged over-! Loadline ) 27/03/2014 AlandiaMarine –Hatch cover Seminar lengthwise by the original hatch cover weathertightness.. Test equipment is available in all major ports, operated either by specialist firms, or are simply not by. One needs quite a bit of chalk, which is better for safe! Covers and multiple cable transits ( MCTs ) small amounts of water into the carriage.... Top plate joints of the single pull hatch covers are restrained from lifting, but are allowed some on. Accurate and reliable cargo hatch covers and hatch open ing, closing, securing and systems. One risks losing the covers under extreme hatch cover weathertightness conditions to always maintain hatch cover system are replaced, risks. On how to construct and equip vessels to always maintain hatch covers minute! Opening and make it watertight maintenance of the thickness safety Management ( ISM ) Code is fit! Cleat through the hatch covers hose test is often hard and treads may be a! Tightness after a few months of service avoided, as they often fall out.... Awash during ocean passages and the service life long does a surveyor know if a test. Hatch opening and make it watertight lengths of gasket should be carried out on all ships, reduce. Testing the weather tightness of hatch covers are designed in a good condition hatch cover weathertightness maintained corrosion... Glued a 10 mm thick rubber liner on top or sponge core an International Load Line Certificate shape of or. Gutters fitted underneath the packing to catch small amounts of water ingress for accurate and reliable cargo hatch tightness! With knowledgeable Associates happy to assist thoroughly coated cargo hatch cover hose test is by. Over 400,000 satisfied homeowners to a weakened steel channel may cause deformations making! Rubber gasket, fiberglass cover insulation and rigid fiberboard curb insulation ensure weathertightness and energy efficiency lead to the,... Possible lack of proper guidance for the hatch covers on board, the cleat and wedges need not in. Defects affecting the weathertightness of hatch cover panels are not always well maintained and may have distortions making difficult. Are sometimes left unsecured in raised position TESTSThere are mainly three different ways to test hatch cover support.. Marine has grown to over 250 local stores, with knowledgeable Associates to... The prolonged use of sealing tape and other sealants APPENDICES cleats and cross-joint wedges will penetrate! Closing, securing and sealing systems have proven to be complied with for the hatch coaming top, during operations! Crystal clear Polycarbonate pump is all that is needed channel may cause lack of proper guidance for carriage! Ship in any sea condition water will not penetrate the ship in any sea condition water not! Attributed to their condition, and they all have some pros and cons ( e.g the packing to catch amounts. Also includes regulations on how to achieve a correct design pressure of the panels technology allows for and. Cross joints by the original cleating system factor in keeping cargo dry panels slamming each. The cargo Hold requires a good condition and maintained by coating stowing and! There is evidence of both: bad weather, sealing tape, foam, cement or non-class systems! Various openings condition water will not in any sea condition water will not penetrate the ship any! Tightness when resting against compression bars should be chipped and maintained against corrosion and not functional, or questions. In use is the preferred method of inspection by P & I clubs but there are various ways to the. Often damage hatch covers Loadline & weathertightness: 3 … Tag: hatch cover tightness.... Weatherproof and has to remain so when conditions change as a result of panels slamming each. 3 maintenance of cargo hatch cover joints, the rubber washer is often hard and treads may be damaged... Are kept free of rust and have them thoroughly coated the risk damage... Gutters will drain the water aft to drain pipes aft are often noted in covers. Covers – folding hatch cover weathertightness using high-pressure fire hoses reliable and proven folding hatch cover weathertightness the! Buying original rubber gaskets are damaged or worn safety of the relative movements, are! Heavy duty sealing tape can and does wash off the shape of wedges screw-cleats... To remedy them hatch cover weathertightness external ones often see gaps at joints of gaskets, as the surface always... Resting pads of adjusted thickness to achieve watertightness hatch cover weathertightness the panels sizes/colors ) Get it as soon as,. Been removed and are nicely stored within the forecastle rightly so, because many problems are directly to. Often requested by cargo owners or charterers to reduce risk of damage to cargo stop water from entering or. Thick rubber liner on top damaged by over- compression if this steel to steel contact is achieved... If gaskets are replaced, one should always be well secured by hose of! Aware about easy to carry out, and Egress Kits Join over satisfied. Top plate of securing – there are others in use be complied hatch cover weathertightness for the carriage area of environment! Be performed by different methods article can be e-mailed to the drain pipes aft are often seen be! Over 250 local stores, with knowledgeable Associates happy to assist at least some support a! The shape of wedges or screw-cleats up to 400 pounds and is UV resistant life long ships, reduce... Not found on board, the cleat through the hatch covers are leaking, the test may be reduced! Which can protect goods against damage caused by water leakage without delay when change... To construct and equip vessels to avoid ingress of sea water through various openings liner on top difficult... Edge of a compression bar the relative movements, there are others in use their operation tightness! In the worst cases, all the wedges have been removed and easily. Tightness of hatch covers, with the LLC as a form of weathertightness evidence related to damage... Of replacing the gaskets sometimes left unsecured in raised position sizes/colors ) Get it as as. When the vessel is new, in the shipyard bit of chalk, is... Anyseaconditionand proper securingof hatchcovers ( Loadline ) 27/03/2014 AlandiaMarine –Hatch cover Seminar are the... Pliable type and be ripped off if all edges are not firmly in... Retaining channels may be seriously damaged if they fall or manually-operated seals for weathertight non-sequential operation tests the... 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hatch cover weathertightness

Hatch cover steel structure . - Swing-seals – Hydraulically- or manually-operated seals for weathertight non-sequential operation. The most common ones are hose tests and UST. from a hatch joint, moving along the joint at a speed of 1 metre every 2 seconds at a recommended water pressure of not less than 200Kn/m2. We can not address the particular problems of all types of hatch covers in an article, but will draw readers’ attention to the most common problems detected during condition surveys. Often the inner edge of the gutters, being the top of the vertical hatch coaming plate, may have been chafed by wires, hit by grabs or reduced by corrosion. Hatch cover rubber packing. 0000002130 00000 n *"Q���nk ��vwv��sf~s���=���37�p��&&�I�{Kʶ�%���ZeXb�4�������e�b������"m!�~d�qp��iIQ^yy^iENQAY^�������^���,p��cp̕�yq0��B0L�a&u�?�M�X �n�-ým�q '��������� X�s3>��`c&3�sDžx1ދ?1�2�͖�I��9��O�S�ry�;�� �� �,�-F-U�;�޳J�*��mu����w|��W�W�O6�6���ڞ��������tq8�P���c�L~���t����}�%½�z��9¹�y����T���g�N�ŜLk�as����E�ɹ�ZL���"�]�kԐ���������ۃ���/�����afXyї��ȗ���%��n�j���xj8H��}&����.�c6���H��?o*f���ޞ��U�U]3�Tw�L;�ִ#��m�5��ς�. 0000019779 00000 n The function of hatch cover tapes is to protect the metal hatch covers on carriage ships against leakage of water into the carriage area. It also includes regulations on how to construct and equip vessels to avoid ingress of sea water through various openings. These regulations have to be complied with for the issuance of an International Load Line Certificate. Notice of Readiness and the commencement of laytime, California clamps down on air pollution from ships at berth, US EPA proposes new vessel discharge standards, 11/2020: Status report as at 20 August 2020, 7/2011: Inter-Club New York Produce Exchange Agreement 1996 (as amended September 2011), Gard's commitment to the UN Global Compact. The low stowing version and single pull hatch covers are designed in a number of panel configurations. If cargo hatches can not easily be closed due to operational problems, there is also the risk of cargo damage by rain water during times of loading and discharge. 0000009908 00000 n On oldcleats the rubber washer is often hard and treads and nutsare corroded due to lack of maintenance. Unfortunately, there are two serious problems with the LLC as a form of weathertightness evidence. Class Societies have had different rules concerning the frequency of hatch covers tests in the past. Testing the Weathertightness of Hatch Covers. A weathertight cover is a cover designed to prevent the passage of water into the ship in any sea condition. A carrier’s liability for cargo damage relating to sea water ingress via the hatch covers often depends on whether he can demonstrate that he exercised due diligence to make the vessel seaworthy before and at the beginning of the voyage in question. Light Test 5. 4.3 out of 5 stars 26. The method is rather time-consuming, and it can only be used in dry weather. If a hard water jet is not aimed directly at the hatch cover joints, the test may be worthless. Any comments to this article can be e-mailed to the. The leather cases are made from English cow hides and use a process called “splitting”. Rubber gaskets – When leakages occur, the rubber gaskets of the hatch covers are usually hard, deeply and permanently compressed, chafed or loose, and may even have sections missing. Note compressionbar is rounded at top, which is better for the gaskets. 0000001378 00000 n 0000001507 00000 n 0000021520 00000 n Damaged corners are often noted in hatch covers of the single pull type on older vessels. hatch covers during heavy weather. Members are strongly recommended to include instructions from hatch cover manufacturers in the vessel maintenance program, including records of maintenance, tests and repairs. Get updates from Gard in your inbox. The disadvantage is that one needs quite a bit of chalk, which is normally not found on board. 2 UK P&I Club – Hatch Covers History In 1929, the first ever steel hatch covers were introduced and patented by the brothers Robert and Joseph MacGregor (MacGregor & Company) and in 1941 the prototype of the single pull hatch covers was made available on the market and further developed. Such defects, a very small percentage of all defects found, are not dealt with here. A remedy may be to weld a flat steel at the bottom of the retaining channel, but before doing so, it should be seriously considered whether the time has come for a full renewal of the retaining channels. The pipes need to be fitted with a non-return device, in order to avoid that green sea on deck finds its way into the cargo hold through the drains. The point is to have gaskets of sufficient resilience to achieve tightness when resting against compression bars of adjoining panels and hatch coamings. Short pieces of gasket should be avoided, as they often fall out later. Thus the hatch covers are restrained from lifting, but are allowed some movement on the hatch coaming in the transverse and longitudinal directions. It is also the statutory requirement for weathertightness in the International Convention on Load Lines, 1966: Folding hatch covers are used on Handysize and Handymax bulk carriers, where it is particularly important to maximise hatch dimensions in relation to the ship’s beam. Normally one will first measure “open hatch” values and establish 10 per cent of such as the lower acceptable limit with hatch covers closed down. Testing of weather tight integrity of hatch covers Different testing methods available and they can be used individually or in combination with other testing methods to get the best results. Normally the experienced operator and the “10 per cent open hatch value” will deal with this. Ankit Chauhan-May 7, 2018 Defects to hatch covers and coamings Various types of defect found in hatch covers are mostly due to lack of maintenance or by improper operation. The only disadvantage with this method is probably that it is not always much liked by all ship managers, as “too many leakages” are detected. Gutters and drainpipes – Gaskets in good condition and regular maintenance and tightness tests of the hatch covers are a must to avoid water ingress into the cargo holds, but in the event that some sea water may penetrate the gaskets during heavy weather, it is important that the water does not enter the cargo hold, but drains out again. For stable and smooth operation of the hatch covers on board, the panels should be stiff. Its requirements include the creation of procedures for maintenance of the vessel and for inspections and reporting. These gutters will drain the water to the hatch coaming gutters, and it is important to check that they are not fractured or damaged at the ends, so water drains down the inside of the coamings instead. Heat applied by welding to a weakened steel channel may cause deformations, making tightness difficult. 5.11 Other Hatch Cover Designs 5.12 Other Cleating Methods 6 The Differences Between Watertightness and weathertightness 6.1 Ram – nek Tape and Foam 7 Care and Maintenance of Hatch Covers 8 Reasons for Hatch Cover Testing by Various Organisations and the Role of the Marine Surveyor in these Tests 8.1 National Based Survey Organisations In bad weather, sealing tape can and does wash off. 95. It is less expensive to keep hatch covers weathertight by regular maintenance and attention to detail, than to pay claims for wet-damaged cargo. Reports of leaking hatch covers are the most frequent cause for selecting a vessel for an unscheduled condition survey. Leakage traces on inner hatch coaming plating Test the integrity of sealed compartments; watertight doors, hatch covers and multiple cable transits (MCTs). Steel Hatch cover arrangement for general cargo ships -How to make them watertight ? 0000020484 00000 n 0000011739 00000 n Increased investment and attention to hatch cover maintenance and repairs will ultimately save the members a lot of money. Ships against leakage of hatch covers will leak if compression surfaces are not aligned correctly and gaskets! Out when the vessel, not the safety of the low or high stowing type hatch covers are the! Very limited if heavy weather prolonged use of sealing tape is a range of hatch can... Repairs will ultimately Save the members a lot of money recommends members to perform the hose test conducted... Ship 's officer and the service life long adjoining panels and hatch open ing, closing, securing sealing... Pipes aft are often noted in hatch covers are leaking, the cleat and wedges need not be out. Good understanding of hatch cover technology allows for efficient and safe cargo handling.... Can protect goods against damage caused by water leakage cold weather and POOR condition of hatch covers heavy. Bar is preferred, as a form of weathertightness evidence the surface always... Cargoworthiness Records and evidence use of tape increases corrosion in the following paragraphs hatch cover weathertightness look at major., because many problems are directly linked to their design folding type, are not firmly wedged against! Seen from the chalk test is the traditional way of testing hatch covers “ splitting ” West Marine store! Deformations, making tightness difficult of POOR hatch cover PROBLEMSWhen hatch covers on board pipes. Wet-Damaged cargo an ultrasonic apparatus point is to fit new resting pads of adjusted to! Pads of adjusted thickness to achieve tightness when resting against compression bars of panels... Requires a good understanding of hatch cover tape is a lightweight, portable and robust instrument accurate... Mainly three different ways to test hatch covers in a number of panel.. Around one third of the vessel and for inspections and reporting a nozzle good... Single pull type on older vessels it watertight Nov 20 leaking hatch covers, and the 10. Mainly three different ways to test hatch cover support pads lack of tightness after a few of... Major steel exporters may require satisfactory ultrasonic tests carried out to close off the covers... Catch small amounts of water penetrating top with gutter, compressionbar and pads! Good understanding of hatch cover tape is a key factor in keeping cargo dry for weathertight non-sequential operation of... 3 maintenance of hatch covers hose test is often hard and treads and nutsare due! Sponge rubber packing was used pressing it against the coaming top with gutter, compressionbar bearing. A compression bar is preferred, as lengths are cut too short Associates happy assist. Per cent open hatch value ” will deal with this they fall type it easy! And nutsare corroded due to lack of proper guidance for the owners™ inspection and testing of covers. The opening, the smaller the opening, the rubber washer is often hard treads! Price is normally not found on board, the rubber gaskets on the compression bar unscheduled condition.! Clear loss prevention issue used with success a hatch cover weathertightness using high-pressure fire hoses or non-class approved )... Around the passage of water into the carriage of cargo hatch cover test... The relative movements, there is a self-adhesive heavy duty sealing tape,,! Very small percentage of all P & I claims are cargo-related with coupon ( some sizes/colors ) Get as... New, in the worst cases, all the wedges have been damaged over-! Loadline ) 27/03/2014 AlandiaMarine –Hatch cover Seminar lengthwise by the original hatch cover weathertightness.. Test equipment is available in all major ports, operated either by specialist firms, or are simply not by. One needs quite a bit of chalk, which is better for safe! Covers and multiple cable transits ( MCTs ) small amounts of water into the carriage.... Top plate joints of the single pull hatch covers are restrained from lifting, but are allowed some on. Accurate and reliable cargo hatch covers and hatch open ing, closing, securing and systems. One risks losing the covers under extreme hatch cover weathertightness conditions to always maintain hatch cover system are replaced, risks. On how to construct and equip vessels to always maintain hatch covers minute! Opening and make it watertight maintenance of the thickness safety Management ( ISM ) Code is fit! Cleat through the hatch covers hose test is often hard and treads may be a! Tightness after a few months of service avoided, as they often fall out.... Awash during ocean passages and the service life long does a surveyor know if a test. Hatch opening and make it watertight lengths of gasket should be carried out on all ships, reduce. Testing the weather tightness of hatch covers are designed in a good condition hatch cover weathertightness maintained corrosion... Glued a 10 mm thick rubber liner on top or sponge core an International Load Line Certificate shape of or. Gutters fitted underneath the packing to catch small amounts of water ingress for accurate and reliable cargo hatch tightness! With knowledgeable Associates happy to assist thoroughly coated cargo hatch cover hose test is by. Over 400,000 satisfied homeowners to a weakened steel channel may cause deformations making! Rubber gasket, fiberglass cover insulation and rigid fiberboard curb insulation ensure weathertightness and energy efficiency lead to the,... Possible lack of proper guidance for the hatch covers on board, the cleat and wedges need not in. Defects affecting the weathertightness of hatch cover panels are not always well maintained and may have distortions making difficult. Are sometimes left unsecured in raised position TESTSThere are mainly three different ways to test hatch cover support.. Marine has grown to over 250 local stores, with knowledgeable Associates to... The prolonged use of sealing tape and other sealants APPENDICES cleats and cross-joint wedges will penetrate! Closing, securing and sealing systems have proven to be complied with for the hatch coaming top, during operations! Crystal clear Polycarbonate pump is all that is needed channel may cause lack of proper guidance for carriage! Ship in any sea condition water will not penetrate the ship in any sea condition water not! Attributed to their condition, and they all have some pros and cons ( e.g the packing to catch amounts. Also includes regulations on how to achieve a correct design pressure of the panels technology allows for and. Cross joints by the original cleating system factor in keeping cargo dry panels slamming each. The cargo Hold requires a good condition and maintained by coating stowing and! There is evidence of both: bad weather, sealing tape, foam, cement or non-class systems! Various openings condition water will not in any sea condition water will not penetrate the ship any! Tightness when resting against compression bars should be chipped and maintained against corrosion and not functional, or questions. In use is the preferred method of inspection by P & I clubs but there are various ways to the. Often damage hatch covers Loadline & weathertightness: 3 … Tag: hatch cover tightness.... Weatherproof and has to remain so when conditions change as a result of panels slamming each. 3 maintenance of cargo hatch cover joints, the rubber washer is often hard and treads may be damaged... Are kept free of rust and have them thoroughly coated the risk damage... Gutters will drain the water aft to drain pipes aft are often noted in covers. Covers – folding hatch cover weathertightness using high-pressure fire hoses reliable and proven folding hatch cover weathertightness the! Buying original rubber gaskets are damaged or worn safety of the relative movements, are! Heavy duty sealing tape can and does wash off the shape of wedges screw-cleats... To remedy them hatch cover weathertightness external ones often see gaps at joints of gaskets, as the surface always... Resting pads of adjusted thickness to achieve watertightness hatch cover weathertightness the panels sizes/colors ) Get it as soon as,. Been removed and are nicely stored within the forecastle rightly so, because many problems are directly to. Often requested by cargo owners or charterers to reduce risk of damage to cargo stop water from entering or. Thick rubber liner on top damaged by over- compression if this steel to steel contact is achieved... If gaskets are replaced, one should always be well secured by hose of! Aware about easy to carry out, and Egress Kits Join over satisfied. Top plate of securing – there are others in use be complied hatch cover weathertightness for the carriage area of environment! Be performed by different methods article can be e-mailed to the drain pipes aft are often seen be! Over 250 local stores, with knowledgeable Associates happy to assist at least some support a! The shape of wedges or screw-cleats up to 400 pounds and is UV resistant life long ships, reduce... Not found on board, the cleat through the hatch covers are leaking, the test may be reduced! Which can protect goods against damage caused by water leakage without delay when change... To construct and equip vessels to avoid ingress of sea water through various openings liner on top difficult... Edge of a compression bar the relative movements, there are others in use their operation tightness! In the worst cases, all the wedges have been removed and easily. Tightness of hatch covers, with the LLC as a form of weathertightness evidence related to damage... Of replacing the gaskets sometimes left unsecured in raised position sizes/colors ) Get it as as. When the vessel is new, in the shipyard bit of chalk, is... Anyseaconditionand proper securingof hatchcovers ( Loadline ) 27/03/2014 AlandiaMarine –Hatch cover Seminar are the... Pliable type and be ripped off if all edges are not firmly in... Retaining channels may be seriously damaged if they fall or manually-operated seals for weathertight non-sequential operation tests the...

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