Editing Naval architecture (section)

===Hydrodynamics===
* [[Hydrodynamics]] concerns the flow of water around the ship's [[hull (watercraft)|hull]], [[bow (ship)|bow]], and [[stern]], and over bodies such as [[propeller]] blades or [[rudder]], or through thruster tunnels. 
*[[Ship resistance and propulsion]] concern resistance towards motion in water primarily caused due to flow of water around the hull. Powering calculation is done based on this.
* [[marine propulsion|Propulsion]] is used to move the vessel through water using [[propellers]], thrusters, [[pump-jet|water jets]], [[sail]]s etc. Engine types are mainly [[internal combustion engine|internal combustion]]. Some vessels are electrically powered using [[nuclear marine propulsion|nuclear]] or [[solar energy]].
* [[Ship motions]] involves motions of the vessel in seaway and its responses in waves and wind.<ref>{{Cite web|url=https://www.usna.edu/NAOE/academics/en455.php|title=United States Naval Academy Seakeeping and Maneuvering Course Notes by C.Q. Judge and A. Ibrahim|website=www.usna.edu}}</ref>
* Controllability (maneuvering) involves controlling and maintaining position and direction of the vessel.