Mooring Systems

EVA Mooring Systems and Marine Solar-lighted Warning Buoys

The weaknesses of the traditional Steel Mooring and Navigation Buoys are rusty, worn out and sharing of pulling forces among the Buoys’ cylindrical structures.  In case of ageing and/or collision, especially the Private Mooring Buoys, it may be creaked, holed, sunk or even pulled apart during a heavy storm.

With the high technology support and availability of new material nowadays, our new developed Non-metal Mooring Buoys are either made in high-density Ethylene-co-Vinyl Acetate (EVA) with all-in-ones stainless steel middle shaft, then sprayed with 5 – 8 mm thick Polyurea that mixed with the desired colour, or used the Fiberglass Module (GRP) fitted with Reinforced Rubber Fender, then filled up entirely with hard Polyurethane (PU).  Polyurea is a newly developed material applied by spraying with a Computerized Spraying System.  It is a very high abrasive, heat resistant and never worn-out material, and it will dry immediately upon spraying.  

The design of the Non-metal Mooring Buoys is to remove the stress (pulling forces) from the cylindrical body of the Mooring Buoy; thus, all the pulling forces will be taken over by the Middle Shaft or Mooring Chain and the Mooring Lines to the Boat, the Mooring Buoy itself only acts as a floatation unit to support the weight of the Mooring Chain and maintains 1/31/2 stay afloat on the surface as required. 

EVA Mooring Buoys are available in two Versions: Middle Shaft Version (All-in-ones stainless steel Middle Shaft with top and bottom Mooring Rings) and Through Chain Version (The Mooring Buoy with a stainless steel hollow structure that allows the Chain to go through).  All EVA Mooring Buoys are designed and tailor-made upon Boat requirements.  The Colour choice of Yellow / Green / Red is also available upon request.

Despite the weight and size of an EVA Mooring Buoy is much less than a Steel Mooring Buoy under the same buoyancy requirement, it is more long-lasting (10 years or more) and maintenance-free for long term operation.  In case of collision, the impact forces will be much reduced and caused no damage to the Boat.  Over a period of time, when marine barnacles found on the surface and underneath an EVA Mooring Buoy, it (only weights 1/4 of a Steel Buoy) can be easily flipped over 90 degrees on the surface and cleaned in place without removal and repainting.  EVA Mooring Buoys overcome most of the previous problems on the Steel Mooring Buoys and significantly reduce the ongoing maintenance costs

There are many Steel / GRP Through Chain Buoys and HDPE Buoys available in the market nowadays; it is true that the cylindrical body of an HDPE or GRP Mooring Buoy will never get rusty and worn out.  However, the hollow structures of the Steel or GRP Through Chain Buoys that are made in mild steel may pull apart from the cylindrical body after a couple of years due to rusty and worn out;  Also, the use of improper Shackle for Chain connection on the top of the Buoy and those combinations of rusty and marine barnacles inside the hollow structure will eventually seize up the Chain at the Buoy.  Besides the Middle Shaft or Hollow Structure problems, some HDPE Buoys are too narrow and too high; please note that the higher the Mooring Buoy afloat on the surface, the higher the chance of leaning sideways causes marine barnacles’ growth and worn out on the Mooring Buoy’s top half.
This is the reason why we designed and made all our EVA Mooring Buoys in appropriate sizes and fitted with all-in-ones stainless steel Middle Shaft that fully wrapped around by EVA and Polyurea spraying for watertightmaintenance-free and long-lasting.

Mooring Chain connects the Mooring Buoy to the Concrete Sinker underwater, but most Boat Owners did not get what they paid for!  The Mooring Chain’s material composition makes a world difference in its pulling strength and durability, although they all look the same.  Mooring Chains (Stud Link, AM or Open Link, PM) are made by Forged Steel and are classified into Three Categories (Grade I, II and III).  Grade I Chains are cheaper, but it corrodes much quicker in seawater conditions, and the pulling strength is 40 % less than the Grade II Chains.
Grade II Chains are commonly used for Private Boat Mooring, whilst Grade III Chains are mainly used for Oceangoing Vessels.  The length of the Chain (Stud or Open Link) is primarily decided by the water depth at the mooring area.  Once the Chain Length is identified, a Grade II Chain (especially Stud-link) needs to be tailor-made at the Factory by fitting the Enlarged Open Links at both ends for the standard Type-D Anchor Shackles (It is usually 40 % bigger than the Chain size) to go through and preferrable a set of standard Swivel being installed at about one meter below the Mooring Buoy.  The whole length of Chain with all necessary fittings will then be load-tested as required and coated with Black Asphalt Paint for delivery.  Hot-dipped galvanized finishing for better reduction of marine barnacles in seawater conditions can be requested in additional costs.
Boat Owners should not accept Chains cutting from a longer length or local stock (without Enlarged Open Links and Swivel) and be connected to the Mooring Buoy and Concrete Sinker with an undersized or inadequate Shackles.

A Concrete Sinker that meets the required weights seems a simple matter for most of the Contractors, but the diameter and the size of the Lifting Eye Ring are always undersized!  First of all, if the Lifting Eye Ring is too small, the standard Anchor Shackle (40 % bigger than the Chain size) can’t go through; thus, a non-standard or undersized Joining Shackle has to be used.  Secondly, would the undersized Lifting Eye Ring make in mild steel submerged and worn out by seawater for a couple of years still be able to sustain the Mooring Chain’s pulling forces during a heavy storm?

Finally, no matter how good a Mooring System has been installed, improperly secured or used of undersized Swivel on the Mooring Lines to the Boat may also cause the Boat lost during a heavy storm.  Nevertheless, the Boat Owners are ultimately responsible for the quality and compliance of the entire Mooring System.  In case of failure during a heavy storm, all the damages and consequences made to other Parties will be claimed against the Boat Insurance Company, who will then send an expert team to inspect and verify the entire system for non-compliance.

Kinetic Key Company Limited (KKCL) has been a Professional Contractor in Marine Works for more than 40 years; KKCL established Production Lines in mainland China (PRC) for EVA Mooring Buoys and Marine Solar-lighted Warning Buoys and worked with Chains Manufacturers to tailor-made and supply all types of Mooring Components (including all types of Mooring Chains with Swivels, Shackles and Concrete Sinkers etc.) for Yacht Clubs, Private Boat Owners and Marine Construction Companies, the Products fully meet the Hong Kong Marine Department’s requirements.  Samples of the EVA Mooring Buoys are available at our Warehouse in the New Territories for your inspection and hands-on experience upon request.

BD_1
BD_2
Chain_Baddly Worn
Rusty and Holed Steel Buoy
Worn Eye Ring
D_Buoy
GRP TC Buoy
Damaged TC Buoy_2
Buoys leaning sideways
Lifting Eye and Shackle_1
GRP TC Buoy_3
Sinker Eye_12 Tons_1
Precast_EVA_Assembly_3
MS_EVA-Polyurea_Buoys_P_3
Polyurea Spraying_1
EVA Buoy on Surface_5
EVA_Buoys Installation_3
Chain
34 mm Stud Link Chain_1
Swivel Set_1
Swivel_8
Enlarged Link and Shackle
Standard Anchor Shackle_38 mm_1
3 Tons Sinker SS Eye
asdhi8
Sinker

EVA Mooring Systems and Marine Solar-lighted Warning Buoys

The weaknesses of the traditional Steel Mooring Buoys and Navigation Buoys are rusty, worn out and sharing of pulling forces among the Buoys’ cylindrical structures.  In case of ageing and/or collision, especially the Private Mooring Buoys, it may be creaked, holed, sunk or even pulled apart during a heavy storm. 

With the high technology support and availability of new material nowadays, our new developed Non-metal Mooring Buoys are either made in high-density Ethylene-co-Vinyl Acetate (EVA) with all-in-ones stainless steel middle shaft, then sprayed with 5 – 8 mm thick Polyurea that mixed with the desired colour, or used the Fiberglass (GRPModule fitted with Reinforced Rubber Fender, then filled up entirely with hard Polyurethane (PU).  Polyurea is a newly developed material applied by spraying with a Computerized Spraying SystemIt is a very high abrasive, heat resistant and never worn-out material, and it will dry immediately upon spraying.  

The design of the Mooring Buoy is to remove the stress (pulling forces) from the cylindrical body of the Mooring Buoy; thus, all the pulling forces will be taken over by the Middle Shaft or Mooring Chain and the Mooring Lines to the Boat, the Mooring Buoy itself only acts as a floatation unit to support the weight of the Mooring Chain and maintains 1/31/2 stay afloat on the surface as required. 

EVA Mooring Buoys are available in two Versions: Middle Shaft Version (All-in-ones stainless steel Middle Shaft with top and bottom Mooring Rings) and Through Chain Version (The Mooring Buoy with stainless steel hollow structure that allows the Chain to go through).  All EVA Mooring Buoys are designed and tailor-made upon the Boat requirements.  The Colour choice of Yellow / Green / Red is also available upon request.

Despite the weight and size of an EVA Mooring Buoy is much less than a Steel Mooring Buoy under the same buoyancy requirement, it is more long-lasting (10 years or more) and maintenance-free for long term operation.  In case of collision, the impact forces will be much reduced and caused no damage to the Boat.  Over a period of time, when marine barnacles found on the surface and underneath an EVA Mooring Buoy, it (only weights 1/4 of a Steel Buoy) can be easily flipped over 90 degrees on the surface and cleaned in place without removal and repainting.  EVA Mooring Buoys overcome most of the previous problems on the Steel Mooring Buoys and significantly reduce the ongoing maintenance costs

There are many Steel / GRP Through Chain Buoys and HDPE Buoys available in the market nowadays, it is true that the cylindrical body of an HDPE or GRP Mooring Buoy will never get rusty and worn out.  However, the hollow structures of the Steel or GRP Through Chain Buoys that made in mild steel may pull apart from the cylindrical body after a couple of years due to rusty and worn out;  Also, the use of improper Shackle for Chain connection on the top of the Buoy, and those combinations of rusty and marine barnacles inside the hollow structure will eventually seize up the Chain at the Buoy.  Besides the Middle Shaft or Hollow Structure problems, some HDPE Buoys are too narrow and too high; please note that the higher the Mooring Buoy afloat on the surface, the higher the chance of leaning sideways causes the marine barnacles’ growth and worn out on the Mooring Buoy’s top half.
This is the reason why we designed and made all our EVA Mooring Buoys in appropriate sizes and fitted with all-in-ones stainless steel Middle Shaft that is fully wrapped around by EVA and Polyurea spraying for watertightmaintenance-free and long-lasting

Mooring Chain connects the Mooring Buoy to the Concrete Sinker underwater, but most Boat Owners did not get what they paid for!  The Mooring Chain’s material composition makes a world difference in its pulling strength and durability, although they look the sameMooring Chains (Stud Link, AM or Open Link, PM) are made by Forged Steel and are classified into Three Categories (Grade I, II and III).  Grade I Chains are cheaper, but it corrodes much quicker in seawater conditions, and the pulling strength is 40 % less than the Grade II Chains.
Grade II Chains are commonly used for Private Boat Mooring, whilst Grade III Chains are mainly used for Oceangoing Vessels.  The length of the Chain (Stud or Open Link) is primarily decided by the water depth at the mooring area.  Once the Chain Length is identified, a Grade II Chain (especially Stud-link) needs to be tailor-made at the Factory by fitting the Enlarged Open Links at both ends for the standard Type-D Anchor Shackles (It is usually 40 % bigger than the Chain size) to go through and preferrable a set of standard Swivel being installed at about one meter below the Mooring Buoy.  The whole length of Chain with all necessary fittings will then be load-tested as required and coated with Black Asphalt Paint for delivery.  Hot-dipped galvanized finishing for better reduction of marine barnacles in seawater conditions can be requested in additional costs.
Boat Owners should not accept Chains cutting from a longer length or local stock (without Enlarged Open Links and Swivel) and be connected to the Mooring Buoy and Concrete Sinker with an undersized or non-standard Shackles.

A Concrete Sinker that meets the required weights seems a simple matter for most of the Contractors, but the diameter and the size of the Lifting Eye Ring are always undersized!  First of all, if the Lifting Eye Ring is too small, the standard Anchor Shackle (40 % bigger than the Chain size) can’t go through; thus, a non-standard or undersized Joining Shackle has to be used.  Secondly, would the undersized Lifting Eye Ring make in mild steel submerged and worn out by seawater for a couple of years still be able to sustain the Mooring Chain’s pulling forces during a heavy storm?

Finally, no matter how good a Mooring System has been installed, improperly secured or used of undersized Swivel on the Mooring Lines to the Boat may also cause the Boat lost during a heavy storm.  Nevertheless, the Boat Owners are ultimately responsible for the quality and compliance of the entire Mooring System.  In case of failure during a heavy storm, all the damages and consequences made to other Parties will be claimed against the Boat Insurance Company, who will then send an expert team to inspect and verify the entire mooring system for non-compliance.

Kinetic Key Company Limited (KKCL) has been a Professional Contractor in Marine Works for more than 40 years; KKCL established Production Lines in mainland China (PRC) for EVA Mooring Buoys and Marine Solar-lighted Warning Buoys, and worked with Chain Manufacturers to tailor-made and supply all types of Mooring Components (including all types of Mooring Chains with Swivels, Shackles and Concrete Sinkers etc.) for Yacht Clubs, Private Boat Owners and Marine Construction Companies, the Products fully meet the Hong Kong Marine Department’s requirements.  Samples of the EVA Mooring Buoys are available at our Warehouse in the New Territories for your inspection and hands-on experience upon request. 

BD_1
BD_2
Chain_Baddly Worn
Rusty and Holed Steel Buoy
Worn Eye Ring
D_Buoy
GRP TC Buoy
Damaged TC Buoy_2
Buoys leaning sideways
Lifting Eye and Shackle_1
GRP TC Buoy_3
Sinker Eye_12 Tons_1
Precast_EVA_Assembly_3
MS_EVA-Polyurea_Buoys_P_3
Polyurea Spraying_1
EVA Buoy on Surface_5
EVA_Buoys Installation_3
Chain
34 mm Stud Link Chain_1
Swivel Set_1
Swivel_8
Enlarged Link and Shackle
Standard Anchor Shackle_38 mm_1
3 Tons Sinker SS Eye
asdhi8
Sinker
MB_2
Buoys Repairs_1
Buoys Installation_2
Manufacturing of EVA-Polyurea Buoys
EVA Buoys after Numbering_3
Boats_EVA_Buoys_2

EVA Mooring Buoys Vs Steel Mooring Buoys

Item

Considerations

EVA Mooring Buoys

Steel Mooring Buoys

1.

Rusty and Worn Out

EVA Mooring Buoy will never get rusty and worn out.  The top and bottom Mooring Rings and its Middle Structure are all-in-ones made of Stainless Steel.  No painting and maintenance are required. A Steel Mooring Buoy and its top and bottom Mooring Rings made in mild steel will require continuous maintenance, including removal, repairing, anti-rust / anti-fouling painting and replacement almost every two years.

2.

Pulling Forces

Bearing of all pulling forces by the Middle Shaft.  The Mooring Buoy itself only acts as a floatation unit to support the Mooring Chain’s weight.  Sharing of pulling forces among the Mooring Buoy’s cylindrical structures.  In the case of ageing, lack of maintenance or collision, it will be creaked, holed, sunk or pulled apart during a heavy storm.

3.

Collision

The cylindrical body of an EVA Mooring Buoy is made by a soft, light-weight and high abrasive material, in case of collision, the impact forces will be much reduced and made no damage to the Boat. Damages to the Mooring Buoy and the Boat even in a minor collision.

4.

Weight

An EVA Mooring Buoy of 1.0 meter in Diameter only weighs about 120 Kgit only weights 1/4 of a Steel Buoy.  The Mooring Buoy’s material is light-weight (buoyant), long-lasting and maintenance-free. A Steel Mooring Buoy of 1.0 meter in Diameter weights about 550 Kg; the material is heavy steel; in case of ageing/damages (cracked and holed), it will sink.  Unless it had been filled with Styrofoam inside to avoid sinking, it would require additional costs and procedures.

5.

Buoyancy

The weight of a Mooring Chain 26 mm x 12 metres long is about 170 Kg (downward force).  In order to maintain 1/31/2 of the Mooring Buoy stay afloat on the surface as required, an EVA Mooring Buoy of 0.8 metre in Diameter only needs 0.8 metre in Height to offset the downward forces and maintains about 0.4 meter stay afloat on the surface. In order to maintain 1/31/2 of the Mooring Buoy stay afloat on the surface as required, a Steel Mooring Buoy of 1.0 metre in Diameter needs about 1.2 metres in Height to offset the downward forces and maintains about 0.6 metre stay afloat on the surface.
The higher the Mooring Buoy afloat on the surface, the higher the chance of leaning sideways causes the growth of marine barnacles and worn out on the top half of the Mooring Buoy.

6.

Maintenance and Durability

An EVA Mooring Buoy is very light-weight (Only weights 1/4 of a Steel Buoy), over a period of time, when marine barnacles found on the surface and underneath an EVA Mooring Buoy, it can be easily flipped over 90 degrees on the surface and cleaned in place without removal and repainting.  EVA Mooring Buoy is long-lasting and maintenance-free; it may last for 10 years or more under normal usage without extensive care. Over a period of time, when rusty and marine barnacles found on the surface and underneath a Steel Mooring Buoy, additional costs will be required for removal, cleaning, repairing, repainting and replacement.  Even under reasonable good maintenance, a Steel Mooring Buoy may only last for about 5 years.

EVA Mooring Buoys Vs Steel Mooring Buoys

Item Considerations EVA Mooring Buoys Steel Mooring Buoys
1. Rusty and Worn Out EVA Mooring Buoy will never get rusty and worn out. The top and bottom Mooring Rings and its Middle Structure are all-in-ones made of Stainless Steel.  No painting and maintenance are required. A Steel Mooring Buoy and its top and bottom Mooring Rings made with mild steel will require continuous maintenance, including removal, repairing, anti-rust / anti-fouling painting and replacement almost every two years.
2. Pulling Forces Bearing of all pulling forces by the Middle Shaft.  The Mooring Buoy itself only acts as a floatation unit to support the Mooring Chain’s weight.  Sharing of pulling forces among the Mooring Buoy’s cylindrical structures.  In the case of ageing, lack of maintenance or collision, it will be creaked, holed, sunk or pulled apart during a heavy storm.
3. Collision The cylindrical body of an EVA Mooring Buoy is made by a soft, light-weight and high abrasive material, in case of collision, the impact forces will be much reduced and made no damage to the Boat. Damages to the Mooring Buoy and the Boat even in a minor collision.
4. Weight An EVA Mooring Buoy of 1.0 meter in Diameter only weighs about 120 Kg,  it only weights 1/4 of a Steel Buoy.  The Mooring Buoy’s material is light-weight (buoyant), long-lasting and maintenance-free. A Steel Mooring Buoy of 1.0 meter in Diameter weights about 550 Kg; the material is heavy steel, in case of ageing/damages (cracked and holed) it will sink.  Unless it had been filled with Styrofoam inside to avoid sinking, it would require additional costs and procedures.
5. Buoyancy The weight of a Mooring Chain 26 mm x 12 metres long is about 170 Kg (downward force).  In order to maintain 1/31/2 of the Mooring Buoy stay afloat on the surface as required, an EVA Mooring Buoy of 0.8 metre in Diameter only needs 0.8 metre in Height to offset the downward forces and maintains about 0.4 metre stay afloat on the surface. In order to maintain 1/31/2 of the Mooring Buoy stay afloat on the surface as required, a Steel Mooring Buoy of 1.0 metre in Diameter needs about 1.2 metres in Height to offset the downward forces and maintains about 0.6 metre stay afloat on the surface.  The higher the Mooring Buoy afloat on the surface, the higher the chance of leaning sideways causes the growth of marine barnacles and worn out on the top half of the Mooring Buoy.
6. Maintenance and Durability An EVA Mooring Buoy is very light-weight (Only weights 1/4 of a Steel Buoy), over a period of time, when marine barnacles found on the surface and underneath an EVA Mooring Buoy, it can be easily flipped over 90 degrees on the surface and cleaned in place without removal and repaintingAn EVA Mooring Buoy is long-lasting and maintenance-free; it may last for 10 years or more under normal usage without extensive care. Over a period of time, when rusty and marine barnacles found on the surface and underneath a Steel Mooring Buoy, additional costs will be required for removal, cleaning, repairing, repainting and replacement.  Even under reasonable good maintenance, a Steel Mooring Buoy may only last for about 5 years.

Manufacturing of the Non-metal Mooring Buoys and Marine Solar-lighted Warning Buoys

All Non-metal Mooring Buoys and Marine Solar-lighted Warning Buoys are tailor-made at our Factories in mainland China (PRC) upon individual requirements.  KKCL also designed and supplied the EVA Wreck Buoys with Solar-powered LED Lantern to the Hong Kong Marine Department.
The manufacturing processes of the EVA Middle Shaft Mooring Buoys, Marine Solar-lighted Wreck Buoys and GRP-PU Through Chain Mooring Buoys are as follows:

 1. Firstly, assembly of the Pre-cast EVA with the all-in-ones Stainless Steel Middle Shaft or Fiberglass (GRP) Module with Stainless Steel Hollow Structure to form the size of the required Mooring / Navigation Buoy.
2.  Secondly, spray the EVA cylindrical body with several coats of Polyurea that mixed with the desired colour by the Computerized Spraying System.  Polyurea is a newly developed material that is very high abrasive, heat resistant and never worn out, and it will dry immediately upon spraying.
For Fiberglass (GRP) Through Chain Buoys, install the Reinforced Rubber Fenders outside the GRP Module, then fill up inside completely with hard Polyurethane (PU).  A Stainless Steel Mooring Ring will also be paired up with each Buoy for proper Chain connection with a Kenter Shackle.
3.  Finally, dress up, mark the Buoy Numbers as required, apply anti-fouling painting and pack up for delivery.

 

Manufacturing of the Non-metal Mooring Buoys and Marine Solar-lighted Warning Buoys

All Non-metal Mooring Buoys and Marine Solar-lighted Warning Buoys are tailor-made at our Factories in mainland China (PRC) upon individual needs and requirements.  KKCL also designed and supplied the EVA Wreck Buoys with Solar-powered LED Lantern to the Hong Kong Marine Department.
The manufacturing processes of the EVA Middle Shaft Mooring Buoys, Marine Solar-lighted Wreck Buoys and GRPPU Through Chain Mooring Buoys are as follows:

1.  Firstly, assembly of the Pre-cast EVA with the all-in-ones Stainless Steel Middle Shaft or Fiberglass (GRP) Module with Stainless Steel Hollow Structure to form the size of the required Mooring / Navigation Buoy.
2.  Secondly, spray the EVA cylindrical body with several coats of Polyurea that mixed with the desired colour by the Computerized Spraying System.  Polyurea is a newly developed material that is very high abrasive, heat resistant and never worn out, and it will dry immediately upon spraying.
For Fiberglass (GRP) Through Chain Buoys, install the Reinforced Rubber Fenders, outside the GRP Module, then fill up inside completely with hard Polyurethane (PU).  A Stainless Steel Mooring Ring will also be paired up with each Buoy for proper Chain connection with a Kenter Shackle.
3.  Finally, dress up, mark the Buoy Numbers as required, apply anti-fouling painting and pack up for delivery.

 

Boat Mooring Requirements in Hong Kong

The Mooring System’s size depends upon the Boat’s total length, the Mooring Chains’ sizes, and the Concrete Sinkers’ weights to be used will normally be listed in the Letter of Permission from the Hong Kong Marine Department.  The type and size of the Mooring Buoys will not be specified; however, the requirement is the Mooring Buoy should have sufficient buoyancy to support the weight of the Chain at the fullest stretch and should be 33 – 50 % greater than the combined weight of the suspended components (i.e. 1/31/2 of the Buoy stay afloat on the surface after it has been chained up).

As mentioned, an EVA Mooring Buoy’s weight is only 1/4 of a Steel Mooring Buoy under the same buoyancy requirement, and it is more long-lasting and maintenance-free.  Generally, a Boat of total length between 5 – 8 metres, will use Chain size 12 – 18 mm, an EVA Buoy of 0.6 metre in diameter will be required; a Boat of total length between 9 – 11 metres will use Chain size 25 – 32 mm, an EVA Buoy of 0.7 – 0.8 metre in diameter will be required.  A Boat of total length between 11 – 26 metres will use Chain size 32 – 40 mm, an EVA Buoy of 1.0 metre in diameter will be required; a Boat of total length between 24 – 41 metres will use Chain size 40 – 45 mm, an EVA Buoy of 1.1 – 1.2 metres in diameter will be required.  A Boat of a total length between 42 – 56 metres will use a Chain size of 50 mm, an EVA Buoy of 1.3 metres in diameter will be required.  Please take note that the Buoy’s diameter will be bigger if a steel Mooring Buoy is used.   

EVA Mooring Buoys and Marine Solar-lighted Warning Buoys

Our EVA Mooring Buoy with all-in-ones stainless steel Middle Shaft fully covered by EVA and Polyurea is very light-weight (buoyant), never get rusty and worn out, no maintenance is required, it may last for 10 years or more under normal usage without extensive care.

With our fully equipped Production Lines in mainland China (PRC), the cost of making an EVA Mooring Buoy with all-in-ones stainless steel Middle Structure is very compatible with those Steel Mooring Buoys that needed to be filled with Styrofoam inside (avoid sinking) and fully moulded with Fiberglass outside.  But the durability and maintenance-free is much better. 

Kinetic Key Company Limited (KKCL) is more than capable of supplying and installing all types of Mooring Facilities (Mooring Buoys + Mooring Chains + Concrete Sinkers etc.) and Marine Solar-lighted Warning Buoys for Yacht Clubs, Private Boat Owners and Marine Construction Companies.  The Products fully meet the Hong Kong Marine Department’s requirements.  Samples of the EVA Mooring Buoy are available at our Warehouse in the New Territories for your inspection and hands-on experience upon request. 

Commercial Diving Services

KKCL is currently an Exclusive Diving Contractor of the Hong Kong Government Dockyard, responsible for providing Diving Services to over 300 Government vessels patrolling in Hong Kong water.  Underwater Inspection / Conditional Survey of mooring facilities for Yacht Clubs and Boat Owners is also available upon request.

For inquiry, please contact Mr Li on (852) 6952 8400 or (86) 138 2522 3300 or E-mail kkli@kkcl.com.hk.  We are confident that our Professional Teams will offer the best solutions for your inquiries.

Polyurea Spraying_2
Buoy Markings_1
Polyurea Sprayed_2
EVA-Polyurea Buoys_5
EVA Buoys after Numbering_6
Stud Link Chain_3
Solar-lighted Warning Buoys_s
Swivel Set_4
Anchor Shackle Locking_4
監測浮標_Light Buoy
Light Buoy_1
CD_4
CD_2
fsgj24
CD_1

Boat Mooring Requirements in Hong Kong

The Mooring System’s size depends upon the Boat’s total length, the Mooring Chains’ sizes and the Concrete Sinkers’ weights to be used will normally be listed in the Letter of Permission from the Hong Kong Marine Department.  The type and size of the Mooring Buoy will not be specified; however, the requirement is the Mooring Buoy should have sufficient buoyancy to support the weight of the Chain at the fullest stretch and should be 33 – 50 % greater than the combined weight of the suspended components (i.e. 1/31/2 of the Buoy stay afloat on the surface after it has been chained up).

As mentioned, an EVA Mooring Buoy’s weight is only 1/4 of a Steel Mooring Buoy under the same buoyancy requirement, and it is more long-lasting and maintenance-freeGenerally, a Boat of total length between 5 – 8 metres, will use Chain size 12 – 18 mm, an EVA Buoy of 0.6 metre in diameter will be required; a Boat of total length between 9 – 11 metres will use Chain size 25 – 32 mm, an EVA Buoy of 0.7 – 0.8 metre in diameter will be required.  A Boat of total length between 11 – 26 metres will use Chain size 32 – 40 mm, an EVA Buoy of 1.0 metre in diameter will be required; a Boat of total length between 24 – 41 metres will use Chain size 40 – 45 mm, an EVA Buoy of 1.1 – 1.2 metres in diameter will be required.  A Boat of total length between 42 – 56 metres will use a Chain size of 50 mm, an EVA Buoy of 1.3 metres in diameter will be required.  Please take note that the Buoy’s diameter will be bigger if a steel Mooring Buoy is used.   

EVA Mooring Buoys and Marine Solar-lighted Warning Buoys

Our EVA Mooring Buoy with the all-in-ones stainless steel Middle Shaft fully covered by the EVA and Polyurea is very light-weight (buoyant), never get rusty and worn out, no maintenance is required, it may last for 10 years or more under normal usage without extensive care.

With our fully equipped Production Lines in mainland China (PRC), the cost of making an EVA Mooring Buoy with all-in-ones stainless steel Middle Structure is very compatible with those Steel Mooring Buoys that needed to be filled with Styrofoam inside (avoid sinking) and fully moulded with Fiberglass (GRP) outside.  But the durability and maintenance-free is much better. 

Kinetic Key Company Limited (KKCL) is more than capable of supplying and installing all types of Mooring Facilities (Mooring Buoys + Mooring Chains + Concrete Sinkers etc.and Marine Solar-lighted Warning Buoys for Yacht Clubs, Private Boat Owners and Marine Construction Companies.  The Products fully meet the Hong Kong Marine Department’s requirements.  Samples of the EVA Mooring Buoy are available at our Warehouse in the New Territories for your inspection and hands-on experience upon request. 

Commercial Diving Services

KKCL is currently an Exclusive Diving Contractor of the Hong Kong Government Dockyard, responsible for providing Diving Services to over 300 Government vessels patrolling in Hong Kong water.  Underwater Inspection / Conditional Survey of mooring facilities for Yacht Clubs and Boat Owners is also available upon request.

For inquiry, please contact Mr Li on (852) 6952 8400 or (86) 138 2522 3300 or E-mail kkli@kkcl.com.hk.   We are confident that our Professional Teams will offer the best solutions for your inquiries.


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