How many lifelines are required to be fitted to the davit spans for a partially enclosed lifeboat on a cargo vessel?

For a partially enclosed lifeboat on a cargo vessel, the regulatory requirements stipulate that two lifelines must be fitted to the davit spans. This is primarily for safety reasons and to ensure that there are adequate means for the crew or passengers to safely access the lifeboat in case of an emergency. Having two lifelines allows for greater flexibility and safety, as it can provide support from both sides of the boat, facilitating easier boarding or retrieval.

Partially enclosed lifeboats are designed to protect occupants from the elements while ensuring safety during launch and retrieval operations. The requirement for two lifelines is therefore critical in enhancing the overall safety framework for lifeboats on cargo vessels, ensuring that crew members can secure themselves while preparing for boarding or in rough conditions. This requirement is aligned with international safety regulations that aim to minimize risks associated with launching lifeboats.

In summary, the requirement of two lifelines is integral to ensuring that partially enclosed lifeboats can be deployed effectively and safely in an emergency, supporting the vessel's overall compliance with maritime safety standards.