What substance is used to cool the red gear?

The red gear, which refers to the gears within the propulsion system of the RB-M 45, is cooled using raw water. This cooling method is effective in dissipating heat generated during operation, ensuring that the gears maintain optimal performance and do not overheat. Raw water is drawn directly from the surrounding environment, such as the ocean or river, and is circulated around the gear housing to absorb and carry away excess heat.

Using raw water is advantageous for marine vessels because it allows for effective cooling without the need for additional refrigerants or closed-loop systems. In addition, the raw water system is typically simpler and less prone to maintenance issues, which is crucial for the operational efficiency of a response boat like the RB-M 45.

Understanding the cooling system is essential for vessel maintenance and operation, as overheating can lead to mechanical failures and affect the performance and safety of the boat.