Mooring Systems

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 the case of ageing or collision, especially the Private Mooring Buoys, it may be creaked, holed, sunk, or even pulled apart during a heavy storm.

EVA-Polyurea Mooring Buoys

With the high technology support and availability of new material nowadays, our newly developed Non-metal Mooring Buoys are either made in high-density Ethylene-co-Vinyl Acetate (EVA) with the 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 the Reinforced Rubber Fender, then filled inside up with hard Polyurethane (PU) entirely.
Polyurea is a newly developed material applied by spraying with a Computerized Spraying System.  It is a very high abrasive, heat resistantand never worn-out material, and it will dry immediately upon spraying.  

The idea 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 the Mooring Chain directly.  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-Polyurea Mooring Buoys made by us are available in two Versions: Middle Shaft Version consists of a Middle Shaft with top and bottom Mooring Rings all-in-ones made by Stainless Steel, and the Through Chain Version consists of a Stainless Steel Hollow Structure that allows the Chain to go through.  All EVA Mooring Buoys are 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 the case of collision, the soft, lightweight and high abrasive EVA material will significantly reduce the impact forces and cause no damage to the Boat and the Buoy.  Over a period of time, when marine barnacles are 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-Polyurea Mooring Buoys overcame most of the previous problems on the Steel Mooring Buoys and significantly reduced the ongoing maintenance costs

There are many Steel-Fibreglass Through Chain Buoys and HDPE Buoys available in the market nowadays.  It is true that the cylindrical body of a Steel-Fibreglass or HDPE Mooring Buoy will last better in seawater than a Steel Buoy; however, the mild-steel hollow structure or middle shaft may pull apart from the cylindrical body due to rusty and worn out after a couple of years.  Eventually, the heavy rust and marine barnacles generated inside the hollow structure will seize up the Chain inside the Through Chain Buoy.  Besides the hollow structure or middle shaft 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 growth of marine barnacles and worn out on the top half of the Mooring Buoy.
This is why we designed and made all our EVA-Polyurea Mooring Buoys in appropriate sizes and fitted with the all-in-ones Stainless Steel Middle Shaft fully wrapped around by EVA and Polyurea spraying for watertightmaintenance-free and long-lasting.

Mooring Chains

A Mooring Chain connects the Mooring Buoy to the Concrete Sinker underwater, but most Boat Owners did not get what they paid for!  Although they all look the same, the material composition of the Chain makes a world difference in its pulling strength and durability.  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 erodes 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 a Mooring Chain is primarily decided by the water depth at the mooring area.  Once the Chain Length is identified, a Mooring Chain (No matter Grade II or III, Stud-Link or Open-Link) needs to be tailor-made at the Chain Factory by fitting a set of standard Swivel (preferable being installed at about one meter below the Mooring Buoy) and the Enlarged End-Links at both ends of the Chain for proper connection with the Type-D Anchor Shackles (It is usually 40 % bigger than the normal Chain-link).  The whole length of the Mooring Chain with all required 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 an existing/longer length (without the standard Swivel and Enlarged End-Links at both ends) and be connected to the Mooring Buoy and Concrete Sinker with undersized or inadequate Shackles.

Concrete Sinkers

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

Mooring Lines

Finally, no matter how good a Mooring System has been installed, improperly secured or used of undersized Stainless Steel Swivel on the Mooring Lines to the Boat may also cause boat-lost during a heavy storm.

Liability of the Mooring Systems 

Nevertheless, the Boat Owners are ultimately responsible for the quality and compliance of the entire Mooring System.  In case of any failure during a heavy storm, all damages and consequences made to other Parties will be claimed against the Boat Insurance Company, who will then employ an expert to inspect and verify the entire system for non-compliance.

Our Quality Products and Services

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) to tailor-made the EVA-Polyurea Mooring Buoys and Marine Solar-lighted Warning Buoys upon individual Boat/Project requirements.  KKCL also worked with the Chain Manufacturers to make and supply all types of Mooring Components (Mooring Chains with Swivels, Type-D Anchor Shackles and Concrete Sinkers etc.) to the 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
GRP TC Buoy_3
Buoys leaning sideways
Buoys Repairs_1
MB_Installation_I
Chain Renewal_4
CR_1_resizedc
Precast_EVA_Assembly_3
Polyurea Spraying_1
MS_EVA-Polyurea_Buoys_P_3
EVA Buoy on Surface_5
Stud-Link Chain_4
Open-Link Chain_1
Chain
Enlarged End-Links
34 mm Stud Link Chain_1
Swivel Set_1
EVA_Buoys Installation_3
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Chain Connection with Enlarged-End Link_Type-D Anchor Shackle
Chain Connection without End-Link_1
Lifting Eye and Shackle_1
Standard Anchor Shackle_38 mm_1
3 Tons Sinker SS Eye
asdhi8
Sinker

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 the case of ageing or collision, especially the Private Mooring Buoys, it may be creaked, holed, sunk, or even pulled apart during a heavy storm. 

EVA-Polyurea Mooring Buoys

With the high technology support and availability of new material nowadays, our newly developed Non-metal Mooring Buoys are either made in high-density Ethylene-co-Vinyl Acetate (EVA) with the 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 inside up with hard Polyurethane (PU) entirely.
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 idea of the Non-metal 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 the Mooring Chain directly.  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-Polyurea Mooring Buoys made by us are available in two Versions: Middle Shaft Version consists of a Middle Shaft with top and bottom Mooring Rings all-in-ones made by Stainless Steel, and the Through Chain Version consists of a Stainless Steel Hollow Structure that allows the Chain to go through.  All EVA Mooring Buoys are 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 the case of collision, the soft, lightweight and high abrasive EVA material will significantly reduce the impact forces and cause no damage to the Boat and the Buoy.  Over a period of time, when marine barnacles are found on the surface and underneath of 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-Polyurea Mooring Buoys overcame most of the previous problems on the Steel Mooring Buoys and significantly reduced the ongoing maintenance costs

There are many Steel-Fibreglass Through Chain Buoys and HDPE Buoys available in the market nowadays.  It is true that the cylindrical body of a Steel-Fibreglass or HDPE Mooring Buoy will last better in seawater than a Steel Buoy; however, the mild-steel hollow structure or middle shaft may pull apart from the cylindrical body due to rusty and worn out after a couple of years.  Eventuallythe heavy rust and marine barnacles generated inside the hollow structure will seize up the Chain inside the Through Chain Buoy.  Besides the hollow structure or middle shaft 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 growth of marine barnacles and worn out on the top half of the Mooring Buoy.
This is why we designed and made all our EVA-Polyurea Mooring Buoys in appropriate sizes and fitted with the all-in-ones Stainless Steel Middle Shaft fully wrapped around by EVA and Polyurea spraying for watertightmaintenance-free and long-lasting

Mooring Chains

A Mooring Chain connects the Mooring Buoy to the Concrete Sinker underwater, but most Boat Owners did not get what they paid for!  Although they all look the same, the material composition of the Chain makes a world difference in its pulling strength and durabilityMooring 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 erodes 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 a Mooring Chain is primarily decided by the water depth at the mooring area.  Once the Chain Length is identified, a Mooring Chain (No matter Grade II or III, Stud-Link or Open-Link) needs to be tailor-made at the Chain Factory by fitting a set of standard Swivel (preferable being installed at about one meter below the Mooring Buoy) and the Enlarged End-Links at both ends of the Chain for proper connection with the Type-D Anchor Shackles (It is usually 40 % bigger than the normal Chain-link).  The whole length of the Mooring Chain with all required 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 an existing/longer length (without the standard Swivel and Enlarged End-Links at both ends) and be connected to the Mooring Buoy and Concrete Sinker with undersized or non-standard Shackles.

Concrete Sinkers

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

Mooring Lines

Finally, no matter how good a Mooring System has been installed, improperly secured or used of undersized Stainless Steel Swivel on the Mooring Lines to the Boat may also cause boat-lost during a heavy storm.  

Liability of the Mooring Systems

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 damages and consequences made to other Parties will be claimed against the Boat Insurance Company, who will then employ an expert to inspect and verify the entire mooring system for non-compliance.

Our Quality Products and Services

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) to tailor-made the EVA-Polyurea Mooring Buoys and Marine Solar-lighted Warning Buoys upon individual Boat/Project requirements.  KKCL also worked with the Chain Manufacturers to make and supply all types of Mooring Components (Mooring Chains with Swivels, Type-D Anchor Shackles and Concrete Sinkers etc.) to the 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
GRP TC Buoy_3
Buoys leaning sideways
Buoys Repairs_1
MB_Installation_I
Chain Renewal_4
CR_1_resizedc
Precast_EVA_Assembly_3
Polyurea Spraying_1
MS_EVA-Polyurea_Buoys_P_3
EVA Buoy on Surface_5
Stud-Link Chain_4
Open-Link Chain_1
Chain
Enlarged End-Links
34 mm Stud Link Chain_1
Swivel Set_1
EVA_Buoys Installation_3
Swivel_8
Chain Connection with Enlarged-End Link_Type-D Anchor Shackle
Chain Connection without End-Link_1
Lifting Eye and Shackle_1
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 their Middle Structure are all-in-ones made by Stainless Steel.  No painting and maintenance is 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 Buoy and the Boat. Damages to the Mooring Buoy and the Boat even in a minor collision.

4.

Weight

An EVA Mooring Buoy of 1.0 meters in diameter only weighs about 120 Kg, i.e. 1/4 of a Steel Mooring Buoy.  The Buoy’s material is lightweight (buoyant), long-lasting and maintenance-free. A Steel Mooring Buoy of 1.0 meters in diameter weighs about 550 Kg; the material is heavy steel and will sink in case of ageing or damages unless it has been filled with Styrofoam inside to avoid sinking.

5.

Buoyancy

The weight of a 26 mm x 12 metres long Mooring Chain 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 meters in diameter only needs 0.8 meters in height to offset the downward forces and maintains about 0.4 meters 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 meters in diameter needs about 1.2 meters in height to offset the downward forces and maintains about 0.6 meters 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 lightweight; it only weighs 1/4 of a Steel Buoy.  Over a period of time, when marine barnacles are found on the surface and underneath an EVA Mooring Buoy, they 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 are 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 care, 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 their Middle Structure are all-in-ones made by Stainless Steel.  No painting and maintenance is 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 Buoy and the Boat. Damages to the Mooring Buoy and the Boat even in a minor collision.
4. Weight An EVA Mooring Buoy of 1.0 meters in diameter only weighs about 120 Kg,  i.e. 1/4 of a Steel Mooring Buoy.  The Buoy’s material is lightweight (buoyant), long-lasting and maintenance-free. A Steel Mooring Buoy of 1.0 meters in diameter weighs about 550 Kg; the material is heavy steel and will sink in case of ageing or damages unless it has been filled with Styrofoam inside to avoid sinking.
5. Buoyancy The weight of a 26 mm x 12 metres long Mooring Chain 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 meters in diameter only needs 0.8 meters in height to offset the downward forces and maintains about 0.4 meters 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 meters in diameter needs about 1.2 meters in height to offset the downward forces and maintains about 0.6 meters 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 lightweight; it only weighs 1/4 of a Steel Buoy.  Over a period of time, when marine barnacles are found on the surface and underneath an EVA Mooring Buoy, they 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 are 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 care, 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-Polyurea Wreck Buoys with Solar-powered LED Lantern to the Hong Kong Marine Department.
The manufacturing processes of the EVA-Polyurea Middle Shaft Mooring Buoys, Marine Solar-lighted Wreck Buoys and Fiberglass-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-Polyurea Wreck Buoys with Solar-powered LED Lantern to the Hong Kong Marine Department.
The manufacturing processes of the EVA-Polyurea Middle Shaft Mooring Buoys, Marine Solar-lighted Wreck Buoys and FiberglassPU 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 size of the Mooring System is dependent upon the total length of the Boat.  The Mooring Chain’s size and the Concrete Sinker’s weight to be used will normally list 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-free.  Generally, a Boat of a total length between 5 – 8 meters will use a Chain size of 12 – 18 mm, an EVA Buoy of 0.6 meters in diameter will be required; a Boat of a total length between 9 – 11 meters will use a Chain size of 25 – 32 mm, an EVA Buoy of 0.7 – 0.8 meter in diameter will be required.  A Boat of a total length between 11 – 26 meters will use a Chain size of 32 – 40 mm, an EVA Buoy of 1.0 meters in diameter will be required; a Boat of a total length between 24 – 41 meters will use a Chain size of 40 – 45 mm, an EVA Buoy of 1.1 – 1.2 meters in diameter will be required.  A Boat of a total length between 42 – 56 meters will use a Chain size of 50 mm, an EVA Buoy of 1.3 meters in diameter will be required.
Please note that the Buoy’s diameter will be much 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 EVA and Polyurea is very lightweight (buoyant), never get rusty and worn out.  No maintenance is required, it will 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 the 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 and Training

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

All our Commercial Divers and Diving Supervisors are fully qualified for the job and are well trained by our Group Company in Hong Kong and China (PRC).  Professional Dive Training and Equipment Supply for Recreational and Commercial Diving are also available at our Dive Training Centre with Equipment Showroom located by the sea at Dapeng New District, Shenzhen, China (PRC).  For more information on Commercial Diver and Diving Supervisor Training Courses, please browse [Dive Training].

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
Enlarged Link and Shackle
Solar-lighted Warning Buoys_s
Swivel Set_4
Anchor Shackle Locking_4
監測浮標_Light Buoy
Light Buoy_1
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CD_2
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CD_1

Boat Mooring Requirements in Hong Kong

The size of the Mooring System is dependent upon the total length of the Boat.  The Mooring Chain’s size and the Concrete Sinker’s weight to be used will normally list 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 a total length between 5 – 8 meters will use a Chain size of 12 – 18 mm, an EVA Buoy of 0.6 meters in diameter will be required; a Boat of a total length between 9 – 11 meters will use a Chain size of 25 – 32 mm, an EVA Buoy of 0.7 – 0.8 meter in diameter will be required.  A Boat of a total length between 11 – 26 meters will use a Chain size of 32 – 40 mm, an EVA Buoy of 1.0 meters in diameter will be required; a Boat of a total length between 24 – 41 meters will use a Chain size of 40 – 45 mm, an EVA Buoy of 1.1 – 1.2 meters in diameter will be required.  A Boat of a total length between 42 – 56 meters will use a Chain size of 50 mm, an EVA Buoy of 1.3 meters in diameter will be required.
Please note that the Buoy’s diameter will be much 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 lightweight (buoyant), never get rusty and worn out.  No maintenance is required, it will 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 the 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 and Training

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

All our Commercial Divers and Diving Supervisors are fully qualified for the job and are well trained by our Group Company in Hong Kong and China (PRC).  Professional Dive Training and Equipment Supply for Recreational and Commercial Diving are also available at our Dive Training Centre with Equipment Showroom located by the sea at Dapeng New District, Shenzhen, China (PRC).  For more information on Commercial Diver and Diving Supervisor Training Courses, please browse [Dive Training].

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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