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SOLAS Emergency Towing Arrangement for Ships

Writer's picture: AdminAdmin

Updated: Jan 25

The International Convention for the Safety of Life at Sea (SOLAS) has set strict rules to boost ship safety and prepare for maritime emergencies. Ships must have specific emergency towing plans to react quickly and effectively in critical situations, as per SOLAS regulation II-1/3-4.


An artistic illustration of a ship's SOLAS emergency towing arrangement, showcasing the towing equipment on deck including robust winches, towing lines, and fairleads
An artistic illustration of a ship's SOLAS emergency towing arrangement, showcasing the towing equipment on deck including robust winches, towing lines, and fairleads

The Maritime Safety Committee adopted Resolution MSC.256(84) in May 2008. This resolution laid out guidelines for owners and operators on preparing emergency towing procedures. These guidelines aim to standardize and enhance ship SOLAS emergency towing arrangements across the maritime industry.


Introduction to SOLAS Emergency Towing Arrangements

The International Maritime Organization (IMO) has set regulations under the Safety of Life at Sea (SOLAS) convention. These regulations aim to ensure the safety of ships and their crews in emergency situations. A key part of these regulations is the need for ships to have emergency towing arrangements. These systems allow a dead (without propulsion) vessel to be towed to safety by another ship, preventing further damage or loss of life.


Emergency towing arrangements include dedicated equipment at the bow and stern of a vessel. Their purpose is to enable the rapid deployment of towing gear in emergencies. The requirements for these arrangements differ based on the vessel type and age, with variations for tankers built before and after July 2002.


The IMO has provided detailed guidelines for the design and performance of emergency towing arrangements in MSC Resolution 35(63). These guidelines ensure the towing equipment can handle emergency towing forces and deploy swiftly when necessary.


The safe working load of the towing pennant should be at least twice the bollard pull of the towing vessel. The pennant should have a length of at least twice the freeboard height of the vessel or 50 meters, whichever is greater.

An emergency towing arrangement includes several key components:

  • Towing pennant

  • Strongpoint

  • Fairleads

  • Chafing gear

  • Storage drum or winch


These components ensure the towing gear can be deployed quickly and safely, even in challenging conditions.


Ships must also have emergency towing procedures in place. These procedures detail the crew's actions in an emergency, including deploying the towing gear and communicating with the towing vessel. Regular drills and training ensure the crew knows these procedures well, ready to execute them effectively when needed.


Requirements for Tankers Built On or After 1 July 2002

Tankers constructed post-1 July 2002, with a deadweight of 20,000 tonnes or more, must have emergency towing setups at both bow and stern. This is mandated by SOLAS regulations. Such arrangements are pivotal for shipboard safety, ensuring vessels can be towed swiftly and securely in emergencies. This enhances maritime safety standards.





Rapid Deployment Capabilities

Emergency towing setups on these tankers must be designed for swift activation, even without main power. This is a key aspect of contingency planning, ensuring the towing system functions efficiently in emergencies.


Pre-Rigged Emergency Towing Arrangements

At least one emergency towing setup must be pre-rigged for quick use. Deployment times are set as follows:

  • The aft arrangement should be ready within 15 minutes in harbour conditions.

  • The forward arrangement, not pre-rigged, must be deployed within one hour in harbour conditions.


These strict deployment times highlight the criticality of maintaining and accessing emergency towing systems. They are integral to a robust maritime safety framework.


Strength Considerations for Emergency Towing Arrangements

Emergency towing setups on tankers post-1 July 2002 must be robust, considering the vessel's size, deadweight, and potential weather forces. The table below outlines the strength requirements:


Tanker Size

Minimum Breaking Strength

20,000 - 50,000 tonnes deadweight

1,000 kN

50,000 tonnes deadweight and above

2,000 kN


These strength standards are vital for shipboard safety, ensuring emergency towing setups can endure towing forces in adverse conditions.


Requirements for Tankers Built Before 1 July 2002

Tankers built before 1 July 2002, with a deadweight of at least 20,000 tonnes, must have emergency towing setups at both ends. These ship SOLAS emergency towing arrangements need approval from the Flag Administration.


The Administration delegates the approval of these emergency towing setups to Recognized Organizations (Class Societies).


Passenger ships needed ship-specific emergency towing procedures by 1 January 2010. Cargo ships built after 1 January 2010 must also have these procedures. Those built before that date had until 1 January 2012 to comply.


An illustration of a maritime emergency towing arrangement, showcasing a ship equipped with emergency towing gear, including tow lines and handles
An illustration of a maritime emergency towing arrangement, showcasing a ship equipped with emergency towing gear, including tow lines and handles

Vessel Type

Deadweight

Emergency Towing Arrangement Requirement

Tankers (built before 1 July 2002)

Not less than 20,000 tonnes

Fitted at both ends

Passenger Ships

All

Ship-specific emergency towing procedures by 1 January 2010

Cargo Ships (built after 1 January 2010)

All

Emergency towing procedures

Cargo Ships (built before 1 January 2010)

All

Emergency towing procedures by 1 January 2012


Emergency Towing Procedures

The SOLAS amendment MSC.256 (84) now mandates documented emergency towing procedures for all ships over 500 gross tons. This requirement entered into force on January 1, 2010, for all passenger ships and new passenger and cargo vessels. Cargo ships built before this date had to comply by January 1, 2012.


Creating effective emergency towing procedures demands a meticulous review of the ship's current setup and equipment. Maritime consultants emphasize the need for these procedures to be tailored to the vessel's specifics for maximum safety and efficiency in emergencies. The International Maritime Organization (IMO) stipulates that at least three copies of the Emergency Towing Booklet must be on board. These should be located in the bridge, forecastle space, and ship's office.


Importance of Crew Familiarity with Emergency Towing Booklet

The emergency towing booklet is a crucial resource that contains vital ship-specific information. It's essential for the crew, especially the Chief Mate, to be thoroughly familiar with it. This ensures a swift and effective response in emergencies. Knowing the vessel's capabilities and limitations helps the crew to handle emergency towing safely, enhancing the safety of the ship and its crew.


Crew Knowledge of Equipment Stowage and Accessibility

Knowing the location and accessibility of essential equipment is crucial for the crew. This knowledge helps in reducing response time and ensuring efficient use of equipment in emergencies. Crew members should be trained in the proper use and maintenance of equipment.


Procedure

Key Considerations

Communicating with the Bridge

Chief Mate must maintain constant contact with the Bridge throughout the emergency towing procedure

Compliance with Navigation Rules

Vessel must display proper lights and signals to ensure safety during towing

Ensuring Watertight Integrity

Hatches, portholes, valves, and other openings must be properly secured before commencing the voyage

Maintaining Stability

Stability is one of the most critical aspects to consider during the emergency towing procedure

Preparing Ship's Particulars

A detailed data sheet of the ship's particulars must be always available onboard

Obtaining Weather Information

Accurate information about the expected sea state and weather conditions must be obtained before towing


Emergency Towing Booklet (ETB) Requirements

The Emergency Towing Booklet (ETB) is an essential component of these plans. It is required on all cargo vessels. The ETB should be tailored for each ship, presented in a clear format such as a booklet or poster. It must include crucial ship details, such as the ship's name and anchor information, along with diagrams to assist with emergency towing.


There should be at least three copies of the ETB on board, in the wheelhouse, engine room, and forward station. Owners/operators should also keep a copy handy for emergencies. Having an electronic copy makes sharing information fast.


The Emergency Towing Booklet is a crucial tool for effective ship contingency planning and should be tailored to the specific vessel's characteristics and equipment.

The Emergency Towing Booklet should have several key parts:

  • Key towing information

  • List of facilities

  • Towing operations

  • Decision-making matrix to assist the Master in different emergency scenarios

  • Typical towing patterns

  • Examples of procedures for connecting towing lines

  • Organization and training of crew for emergency towing

  • Maintenance of towing equipment

  • Risk assessment

  • Vessel plans and diagrams


Ship-Specific Emergency Towing Procedures

The Emergency Towing Booklet (ETB) acts as a detailed guide for the crew. It outlines the steps for emergency towing in a clear, concise manner. This makes it easy to apply the procedures quickly, even in stressful situations.


Line Handling Procedures

Line handling procedures are a crucial part of the ETB. They detail the correct methods for handling messenger lines, towlines, and bridles during emergencies. Standardizing these practices helps the crew work together efficiently and reduces the risk of accidents.


These procedures should cover various situations, including:

  • Establishing initial contact with the towing vessel

  • Transferring messenger lines between ships

  • Connecting and securing towlines and bridles

  • Monitoring and adjusting line tension during towing

  • Disconnecting and retrieving lines upon completion of the operation


Layout and Structural Adequacy of Connection Points

Assessing the ship's connection points is vital for successful and safe towing operations. Points like fairleads, chocks, winches, bitts, and bollards are crucial for securing towing lines. The ETB should provide detailed information on these points.

This information helps the crew choose the best connection points for towing gear. It considers factors like expected loads and towline angles. This ensures the vessel can handle the towing forces safely.


Connection Point

Location

Safe Working Load (SWL)

Fairlead

Forward deck

50 tons

Chock

Aft deck

60 tons

Winch

Midship

80 tons

Bitt

Forward deck

40 tons

Bollard

Aft deck

70 tons


Regular checks and maintenance of these points are key to their reliability. The ETB should offer guidelines for upkeep and procedures for reporting and fixing any issues.


By developing detailed emergency towing procedures and maintaining connection points, vessel owners can greatly improve safety and effectiveness in towing operations. This protects the crew, cargo, and the environment.

Importance of Emergency Preparedness in the ISM Code

The International Safety Management (ISM) Code, adopted in 1994, underscores the critical role of maritime emergency preparedness and shipboard safety. By 2002, nearly all international ship managers were mandated to adhere to the ISM Code. This code establishes benchmarks for safe ship operations, risk evaluation, and the continuous enhancement of safety management competencies among crew members.


A small-sized ship surrounded by turbulent waves
A resilient ship battles through turbulent seas under ominous skies.

The ISM Code mandates a comprehensive safety management system (SMS) for ships. This system must encompass a safety and environmental protection policy, protocols for safe operations, and mechanisms for clear communication. It also requires accident reporting, emergency response, and internal audit processes. The implementation of these measures post-ISM Code adoption added stress for seafarers due to their complexity and language challenges.


The procedures developed for emergency towing arrangements should be considered as part of the emergency preparedness required by paragraph 8 of part A of the International Safety Management (ISM) Code.

The International Maritime Organization (IMO) outlines five fundamental principles for survival in fire emergencies: understanding fire theory, regular training, preparedness, danger awareness, and consistent inspections and maintenance. These principles underscore the significance of safety training, emergency readiness, and compliance with global maritime regulations. They aim to ensure seafarers' safety at sea and reduce the risk of accidents or environmental harm.


Since its inception, the ISM Code has seen numerous revisions, with major updates in 2002, 2006, 2009, 2010, and 2015. These revisions have added new sections, risk requirements, and cross-references, among other changes. The ISM Code emphasizes the commitment from top management for effective safety management and pollution prevention.


  • Part A of the ISM Code addresses company responsibilities and authority, emergency preparedness, accident and non-conformity reports, and documentation.

  • Part B focuses on certification, verification, and the forms of certificates related to safety management systems.


The ISM Code's objectives are to ensure safety at sea, prevent human injury and loss of life, avoid environmental damage, and protect property. The safety management system aims to continually improve safety management skills, evaluate risks, and enhance safety practices in ship operations.


Benefits of Ship SOLAS Emergency Towing Arrangement

The implementation of ship SOLAS emergency towing arrangements significantly enhances maritime safety standards. It ensures vessels are equipped with emergency towing systems at both the bow and stern. This minimizes the risk of vessel loss or damage in emergencies like engine failure or steering gear malfunction.


The SOLAS emergency towing arrangement's key advantage is its ability to quickly connect a disabled ship to a towing vessel. Time is crucial in emergencies, and a pre-rigged towing system reduces response time. This quick action can mean the difference between a successful rescue and a disaster, saving lives and preventing environmental damage.


SOLAS regulations also focus on crew training and familiarization with emergency towing procedures. Regular drills ensure the crew knows how to operate the emergency towing equipment. A well-trained crew can respond efficiently in emergencies, increasing the chances of a successful outcome.


Benefit

Description

Rapid response

Pre-rigged towing systems enable quick connection to towing vessels

Crew preparedness

Regular drills and training ensure crew familiarity with emergency procedures

Reduced risk

Dedicated towing arrangements minimize the risk of vessel loss or damage

Enhanced safety

SOLAS regulations contribute to overall maritime safety standards


Conclusion

The SOLAS emergency towing arrangement regulations are vital for ship safety and maritime emergency readiness. They require ships to have emergency towing systems.


Adopting ship SOLAS emergency towing arrangements has greatly improved maritime safety and reduced accidents at sea. These regulations ensure vessels can respond swiftly to emergencies, safeguarding human life, the environment, and property. It's crucial to train the crew regularly in emergency towing procedures. This ensures they can use the equipment effectively when emergencies arise.


The maritime industry must adapt to new technologies and challenges, keeping ship safety regulations updated. The introduction of goal-based standards for various ship types shows the industry's dedication to safety and emergency readiness.


FAQ

What are SOLAS emergency towing arrangements?

SOLAS emergency towing arrangements are specialized towing systems installed at a ship's bow and stern. They can be quickly deployed to tow a disabled vessel to safety, preventing further damage or loss of life.


When did the SOLAS emergency towing arrangement requirements come into force?

Since 1st January 1996, new vessels must comply with SOLAS emergency towing arrangement requirements. Existing vessels had until their first scheduled docking after 1st January 1996, but no later than 1st January 1999, to implement these standards.


What types of ships are required to have emergency towing arrangements?

All tankers over 20,000 tonnes deadweight, including oil, chemical, and gas tankers, must have emergency towing systems at both ends under SOLAS regulations.


What are the specific requirements for tankers built on or after 1 July 2002?

Tankers constructed after 1 July 2002 must have emergency towing systems that can be rapidly deployed without main power and easily connect to a towing ship. At least one arrangement must be pre-rigged for quick deployment.


What are the requirements for tankers built before 1 July 2002?

Tankers built before 1 July 2002 must have emergency towing systems approved by the Administration, adhering to IMO Guidelines (MSC.35 (63), as amended).


What is the Emergency Towing Booklet (ETB)?

The Emergency Towing Booklet (ETB) is a detailed, ship-specific document. It presents ship data, diagrams, and sketches for emergency towing arrangements in a concise, ready-to-use format.


How does the ISM Code relate to emergency towing arrangements?

The ISM Code considers emergency towing procedures as part of emergency preparedness. This highlights the significance of well-developed and practiced procedures for ship safety.


What are the benefits of SOLAS emergency towing arrangements?

SOLAS emergency towing arrangements enhance ship safety and emergency response capabilities. They ensure vessels are equipped with dedicated systems at both ends, reducing the risk of vessel loss or damage in emergencies.


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