Viscosity is the property of a fluid that resists the relative motion between its adjacent layers, causing a resistance to flow.

The Navier-Stokes Equations are a set of differential equations that describe the motion of a viscous fluid, taking into account both inertial and viscous forces.

Friction between the fluid and the pipe wall is the primary cause of pressure drop in a pipe, leading to a loss of energy in the system.

Boundary layer flow occurs when a fluid flows over a solid surface, with a thin layer of fluid near the surface having a lower velocity due to viscous effects.

The Reynolds Number is a dimensionless number that characterizes the flow regime, with a higher Reynolds Number indicating a greater likelihood of turbulent flow.

Centrifugal pumps are widely used in marine engineering systems due to their ability to handle large flow rates and generate high pressures.

The primary function of a propeller in a marine propulsion system is to generate thrust by converting rotational motion into linear motion, propelling the vessel forward.

Waterjet propulsion utilizes a jet of water to generate thrust, offering advantages such as improved maneuverability and efficiency.

The purpose of a bilge pump in a marine vessel is to remove accumulated water from the bilge, preventing flooding and ensuring the safety of the vessel.

Drag is the resistance experienced by a vessel as it moves through water, opposing its motion and affecting its speed and efficiency.

Tankers are marine vessels specifically designed to transport large quantities of liquid cargo, such as oil or liquefied natural gas, in bulk.

The primary function of a marine boiler in a steam propulsion system is to generate steam, which is then used to drive a steam turbine for propulsion.

Diesel engines are internal combustion engines that utilize a reciprocating piston to convert thermal energy from the combustion of fuel into mechanical energy.

The purpose of a marine condenser in a steam propulsion system is to cool the steam after it has passed through the steam turbine, converting it back into water.

Diesel-electric propulsion utilizes an electric motor to drive the propeller, powered by electricity generated from diesel engines.