Single Point Mooring Hawser – Jerryborg Marine

Jerryborg Marine’s single point mooring products are manufactured and supplied in accordance with the relevant OCIMF guidance documents. All products meet the OCIMF requirements for single-point mooring systems, including the OCIMF guidance on mooring line procurement and testing issued in 2000.

As recommended by the OCIMF, terminals should not only focus on the tensile strength of mooring lines when selecting them. The line’s cushioning capacity under stress and its performance after long-term repeated use should also be considered. Specific explanations of these aspects can be found in subsequent OCIMF guidelines related to tanker operations.

It is particularly important to note that the performance of mooring lines is not static. With prolonged use, the new wet breaking strength, stress cushioning capacity, and overall performance of the line will gradually decline. This change is affected by various factors, such as actual service life, frequency of stress, line type and structure, operating environment conditions, presence of damage, and storage conditions when not in use.

Therefore, when selecting mooring lines for the mooring system and establishing corresponding replacement or scrapping standards, terminal operators should comprehensively consider the above factors rather than making judgments based solely on a single data point.

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Single-Point-Mooring-Hawsers-Jerryborg-Marine

Materiales	Polyamide (Nylon)
Densidad	1.14g/cm³
Melting Point	218-258℃
Resistencia a la abrasión	Excellent
UV Resistance	Good
Resistencia química	Good

Single Point Mooring Hawsers Structure

Jerryborg Marine’s nylon double-braided mooring ropes feature a layered braided structure. The inner layer is a 12-strand braided core, with an outer protective braided layer. The overall structure is robust and abrasion-resistant, meeting the strength and stability requirements of single point mooring conditions, thus making it widely used in related projects.

At both ends of the mooring rope, Jerryborg Marine pre-fabricated eyelets are used. Major stress points are equipped with metal protective sleeves, and a polyurethane coating is added to the exterior to reduce wear during long-term use, thereby extending the mooring line’s service life.

Depending on actual usage needs, Jerryborg Marine can also configure appropriate floats on the mooring line to maintain good buoyancy in the water, facilitating on-site operation and management.

The production and testing of this series of nylon double-braided mooring ropes comply with the relevant requirements of OCIMF 2000 for single point mooring ropes.

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Single Point Mooring Hawser Specification

DIAMETER	CIRC	WEIGHT	BREAKING STRENGTH (Ton)
mm	pulgada	kg/100m	Single Leg	Grommet
80	10	398	148	252
88	11	482	179	304
96	12	572	208	354
104	13	672	250	425
112	14	772	288	490
120	15	887	327	556
128	16	1010	368	626
136	17	1140	419	712
144	18	1280	460	782
152	19	1420	501	852
160	20	1580	551	937
168	21	1740	599	1018

Other sizes are available upon request.

Advantages of Jerryborg Marine Hawser

1. Greater peace of mind for offshore projects

Once the Marine Hawser is attached, it continuously bears tensile force. In actual offshore applications, your concern isn’t the specifications, but its stable operation during work. In one project involving ship-to-ship iron ore transshipment, the hawser remained attached for several berthings throughout the day without significant slack or deformation. The client later reported that it worked better than expected and required less frequent adjustments.

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2. Suitable for high-frequency operating environments

Some ports require multiple berthings or transshipments per day. Frequent changes in tensile force mean that an insufficiently robust hawser will wear or stretch over time. We select the appropriate number of strands and diameter based on the client’s operational needs. In actual projects, such a hawser can withstand repeated operations without easily encountering problems.

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3. Greater focus on actual wear and tear

In the offshore environment, friction and tensile force are constant. Some clients are concerned about rapid surface wear on the cable when using it for the first time. Our Marine Hawser features a wear-resistant outer layer, and after several weeks of field use, surface wear was minimal. Customers can operate with peace of mind without having to frequently change equipment.

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4. Adjustable length and structure based on project requirements

Different projects have different buoy locations and vessel sizes. An inappropriate length can lead to difficulties on-site.

We typically confirm the intended use with the client before determining the length and specifications. This avoids the need for readjustment on-site.

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5. Easier to coordinate with fenders and buoys

In offshore transshipment projects, hawser is often not procured separately. It’s frequently considered in conjunction with fenders and buoys.

If the entire system is supplied by the same party, specification confirmation is smoother. Size mismatches are also less likely to occur during on-site installation.

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6. More direct communication after completion

Cables are long-term components, and issues inevitably arise that require confirmation, such as the degree of wear requiring replacement.

We maintain contact after completing a project. Clients can directly communicate if they have any questions. Confirming many issues in advance prevents disruptions to work schedules.

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Preguntas frecuentes

1. What is a Mooring Hawser?

A mooring hawser is essentially a large cable specifically designed for mooring operations. It’s not the short cable used on ordinary ships, but rather used in single-point mooring or ship-to-ship operations to bear the main tensile force. In many offshore projects, the connection between the ship and the buoy relies heavily on it to withstand continuous tension.

Jerryborg Marine can provide mooring haws of varying strengths depending on the project’s tensile strength. We typically confirm the ship’s tonnage and operating environment first, then recommend the appropriate specifications, rather than providing a generic model.

2. In what scenarios are mooring haws typically used?

This type of cable is commonly found in offshore anchorages, single-point mooring buoys, or ship-to-ship transshipment projects. Especially in oil and ore transshipment, where ships don’t dock but connect directly at sea, the hawser is a critical component.

Jerryborg Marine also provides haws when undertaking buoy or fender projects, facilitating a complete solution for clients and eliminating the need to find separate suppliers.

3. What materials are commonly used in a mooring hawser?

High-strength synthetic fibers, such as nylon or polyester, are commonly used. Different materials have different characteristics; some have high elongation and good cushioning, while others have low elongation and are more stable. The specific choice depends on the project requirements.

Jerryborg Marine will recommend materials based on the client’s operating frequency and stress conditions. For high-frequency ship berthing projects, we will focus more on abrasion resistance and long-term stress performance.

4. How is the strength of the Mooring Hawser determined?

Strength mainly depends on the maximum tensile force of the project. The required breaking strength is usually calculated based on the ship’s tonnage, environmental conditions, and safety factor. It cannot be too low, otherwise there is a risk; nor is it necessary to blindly choose too high, as this will increase costs.

Jerryborg Marine will communicate with the client about the operating conditions before confirming the order. If the client has basic data, we can also assist in verification to avoid selecting the wrong specifications.

5. What problems might arise during the use of a Mooring Hawser?

After prolonged use, common issues include outer layer wear or localized deformation due to stress. In offshore environments, the effects of salt spray and ultraviolet radiation must also be considered. Therefore, regular inspections are necessary.

Jerryborg Marine conducts basic strength and appearance inspections before shipment. If customers discover any abnormalities later, they can take photos, and we will assist in determining whether replacement is necessary.

6. How long can a Mooring Hawser last?

The lifespan is greatly influenced by the frequency of operation. Long-term, high-frequency transport projects will experience faster wear. Periodic use will result in a longer lifespan. The key is regular inspection and maintenance.

Jerryborg Marine also reminds customers to perform daily inspections when providing the hawser. With proper use, it can provide stable service for a considerable period.