10.5 Lighterage at Sea:
Describe:
- Contents of Ship to ship transfer guide,
- Lighterage preparations for both vessels,
- Method of separating on completion of transfer operations
When it comes to lighterage operations at sea, several references such as ISGOTT (International Safety Guide for Oil Tankers and Terminals), INTERTANKO (International Association of Independent Tanker Owners), maritime regulations, and Ship to Ship (STS) transfer guides provide valuable guidance.
Contents of Ship to Ship Transfer Guide:
The Ship to Ship Transfer Guide contains comprehensive information and procedures related to conducting safe and efficient ship-to-ship transfer operations. The guide typically includes the following contents:
General Principles: This section provides an overview of ship-to-ship transfer operations, emphasizing safety, regulatory compliance, and pollution prevention.
Pre-Transfer Planning: This section covers the necessary steps and considerations before commencing the transfer, including risk assessments, communication procedures, compatibility checks, and required permits or approvals.
Operational Procedures: This section outlines the detailed procedures for each stage of the transfer, including vessel approach, mooring and positioning, cargo transfer operations, monitoring and emergency response protocols, and completion procedures.
Safety Measures: This section addresses safety equipment, emergency shutdown systems, fire prevention and control measures, environmental protection measures, and personnel safety requirements during the transfer.
Communication and Documentation: This section emphasizes the importance of effective communication between participating vessels, relevant authorities, and shore-based personnel. It also highlights the documentation requirements, including transfer plans, checklists, and incident reporting.
Lighterage Preparations for Both Vessels:
To ensure safe lighterage operations, both vessels involved in the transfer need to make specific preparations, including:
Pre-Transfer Inspections: Before the transfer, both vessels should conduct inspections to assess their suitability, structural integrity, equipment functionality, and compliance with relevant regulations and guidelines.
Mooring and Fendering Arrangements: Adequate mooring and fendering arrangements should be in place to ensure secure connections between the vessels and mitigate the impact of relative movements.
Emergency Response Plans: Both vessels should have comprehensive emergency response plans in place, addressing potential incidents such as leaks, spills, fires, or equipment failures. These plans should cover personnel roles and responsibilities, communication protocols, and mitigation measures.
Safety Equipment and Contingency Measures: The vessels should be equipped with appropriate safety equipment, including fire-fighting equipment, spill response resources, emergency shutdown systems, and adequate lighting for night operations. Contingency measures should also be established to address unforeseen circumstances or equipment failures.
Method of Separating on Completion of Transfer Operations:
Upon completion of the transfer operations, a method of separating the vessels must be followed. The specific method may vary depending on the circumstances and the type of lighterage operation being conducted. Common methods include:
Gradual Separation: In this method, the vessels slowly and carefully move apart, ensuring that all mooring lines and connections are released or detached in a controlled manner. The vessels should maintain communication throughout the separation process to coordinate movements and monitor for any issues.
Simultaneous Departure: In certain cases, both vessels may depart simultaneously, with each vessel safely maneuvering away from the transfer location. This method requires effective communication and coordination to ensure a smooth departure.
Emergency Disconnect: In the event of an emergency or imminent danger, an emergency disconnect procedure may be initiated. This involves releasing all mooring lines and connections immediately to separate the vessels rapidly.