Mooring Buoys

Foam mooring buoys are in service for inland waterways and offshore instead of traditional steel mooring buoys.

The cylindrical mooring buoy is one kind of representative mooring buoy. The cylindrical mooring buoys can be supplied in chain-through type, or equipped with pad-eye, crucifix, quick release hook, and maker or navigation equipment. Other varieties of end fittings are available to suit every case application. All end fittings are made of galvanized or painted steel to resist seawater corrosion. Application for commercial mooring buoys are offshore and remote mooring, temporary mooring of vessels in a port, dock or harbour, additional mooring for large vessels on berthing/mooring dolphins and longer term mooring for infrequently used vessels.

Spotlight on Production Proces: What You Need to Know

The fittings at both ends can be customized according to customer needs, including galvanized or stainless steel

Make the inner steel structure and carry out tensile strength test.

Process the internal foam core material.

Spray polyurethane elastomer, reinforced with nylon

Inspection before leaving the factory, or inspection by a third party

Mooring Buoys Features

Our Mooring Buoys

PU Protective Outer Skin

Reinforced urethane elastomer skin with 3~20mm thickness
Self-fendering

High impact absorption capacity
Inner PE/EVA Foam

Unskinable closed cell rigid foam core

Upper End Fitting

Various end fitting options available
Internal Steel Core

For better support and balance
Reinforcement Layer

Reinforced nylon filament ensures polyurethane elastomer protective coating has higher tear strength

JMB Mooring Buoys Specification

DOOWIN MARINE supplies a range of mooring buoys with reserve buoyancy between 75kg and 1000kg. They are a heavy-duty offshore mooring buoy with a structural tie-bar offering the user a product with unprecedented strength and reliability due to its fully sealed design.

The mooring foam buoys and tie-bars are manufactured in China allowing a quick turnaround time and high level of quality control. DOOWIN MARINE mooring buoys are foam-filled with marine-grade 100% closed-cell foam to ensure they remain buoyant even if the hull is damaged. The polyurethane spraying technology ensures that the buoys have a much higher strength and durability than the traditional rota-moulding process.

Customized sizes are avaialbe upon request.

Type	Buoyancy	A (mm)	B (mm)	C (mm)	D (mm)	E (mm)	F (mm)	G (mm)	H (mm)	I (mm)	J (mm)	Shackle Size
JMB-75	75kg	580	518	208	310	260	670	250	50	10	20	3.25T
JMB-75H	75kg	580	518	208	310	260	775	250	130	30	45	13.5T
JMB-150	150kg	740	660	265	395	390	850	280	100	20	32	9.5T
JMB-250	250kg	860	770	265	505	430	980	320	100	20	34	9.5T
JMB-500	500kg	1080	940	350	590	520	1285	400	150	25	39	13.5T
JMB-1000	1000kg	1400	1250	500	750	640	1670	500	155	40	58	35T

Cylindrical Mooring Buoys Specification

The below table shows the most commonly requested size only. The standard color is yellow and orange.

Type	Height (mm)	Diameter (mm)	Overall Height (mm)	Weight (kg)	Net Buoyancy (kg)	Net Buoyancy (lbs)
CMB1	700	1500	1500	161	1000	2207
CMB3	1100	2000	2200	544	3000	6620
CMB5	1500	2500	2500	1104	5000	11033
CMB8	1500	2500	3100	1698	8000	17652
CMB10	1500	2500	3300	1924	10000	22065
CMB15	2000	3000	3500	2886	15000	33098
CMB20	2000	3000	4000	4021	20000	44131
CMB25	2000	3000	4000	5027	25000	55163
CMB30	3000	4000	4200	6650	30000	66196

SM Mooring Buoys

The mooring buoys can be installed with various fittings on the top. And the mooring buoys can be designed to meet different requests. It has the same design as common mooring buoys.

The large mooring tube with 82.5mm ID will accept mooring chain of up to 20mm in diameter. The mooring tube is not molded into the buoy but slides into a tubular section that runs down the center of the buoy enabling the tube to be replaced at any stage during the product’s service life.

Customized size are available upon request.