If both thrusters operate at the same depth and thrust, what is the expected difference in efficiency between them?

When both thrusters operate at the same depth and thrust, the expected difference in efficiency between them is negligible. This is because the fundamental operating conditions—including fluid dynamics, pressure, and thrust force—are identical for both thrusters under these circumstances. The efficiency of a thruster is influenced by factors such as design, blade shape, and water conditions, but when both are set to function under the same parameters, any inherent design differences (like blade width) will not contribute to a significant variation in efficiency during that specific operational state. Additionally, in a controlled environment where both thrusters are subjected to the same load and depth conditions, their performance metrics align, leading to an expected outcome of no difference in overall efficiency.