Where are the Guillotine Valves located on a vessel?

Guillotine valves are primarily located at the fantail and outside the main engine room (MER) on a vessel. These valves are critical for controlling the flow of liquids and are often utilized for isolating sections of piping or tanks in marine systems. Their placement at the fantail allows for easy access and operation, facilitating quick responses in emergency situations when immediate closure of the valve is necessary to prevent any spills or complications.

Being at the fantail also ensures a significant advantage in managing overboard discharges and tank filling operations from a safer, more controlled position. Additionally, having the valves outside the main engine room helps in minimizing the risk of contamination or interference with the engine room's operational systems. This design consideration improves safety and operational efficiency aboard a vessel when dealing with fluids and waste management.