A fresh‑water cooling pump in a marine engine relies on the motor‑side segment of the shaft connector to transmit rotation from the input shaft to the impeller. In the manufacturing of marine components this part is fitted between the electric motor or diesel drive and the pump’s rotating assembly, where it carries the torque needed to move coolant through the engine block. Its design allows a small angular offset between motor and pump shafts, preventing stress buildup that could lead to bearing wear or seal failure. By absorbing minor vibrations generated during start‑up and load changes, the segment helps maintain smooth flow and reduces noise in the confined spaces of a ship’s engine room. During routine service the connector can be withdrawn without dismantling the entire pump, enabling quick inspection of the impeller and seals while keeping the cooling circuit intact. This makes it a practical choice for builders of propulsion systems, auxiliary coolers and heat‑exchanger units where reliable, low‑maintenance power transfer is essential for continuous vessel operation.