What is the primary function of shaft seals in marine engineering?

The primary function of shaft seals in marine engineering is to prevent water from entering the ship. Shaft seals are critical components that create a barrier between the ocean water outside the vessel and the internal compartments of the ship. They ensure that water does not infiltrate the hull through the openings where the propeller shafts pass through, which is essential for maintaining the vessel's buoyancy and overall structural integrity.

Effective shaft seals help to minimize the risk of flooding and ensure safety during operations, especially when the ship is underway or operating in rough waters. If water were to enter the ship through these shafts, it could lead to serious issues such as loss of stability, potential sinking, and damage to onboard systems and machinery. Thus, the design and maintenance of shaft seals are crucial elements in marine engineering and ship design.