Which of the following is NOT considered when installing a new bow thruster?

When installing a new bow thruster, propeller material is not typically a primary consideration in the installation process. The focus during installation often revolves around ensuring the system operates safely and effectively, which is why aspects such as over-current protection and battery disconnect switches are critical. Over-current protection is vital for safeguarding electrical components, preventing damage from excessive current draw. A battery disconnect switch is essential for safety, allowing users to quickly shut off power to the thruster when needed.

Bonding, which helps prevent corrosion by ensuring that all metallic parts are at the same electrical potential, also plays a significant role in marine installations. Since bonding impacts the longevity and reliability of the equipment in a marine environment, it is an important factor during installation.

In contrast, while the propeller material can influence performance and durability, it is more relevant to the operational characteristics of the thruster than to the installation process itself. Thus, it stands out as not being a key factor in the context of what needs to be considered during the actual installation.