What are the college basics for marine engineering?

The basic courses are Ship propulsion system in general (main engine, shafting, and propeller) including power and efficiency calculations, also marine power plants in detail (gas turbine, diesel engines, and steam boilers), and should also take a course in marine auxiliary machinery including pumps and compressors.

It depends what would you like to do as a part of marine engineering.
If you want to work in port industry construction, then civil engineer is the answer.
If the construction containers piles.
Pipe lines then mechanical engineer is the answer.
Am working in the port construction as a quality assurance engiier and I have a degree in industrial engineering.
If you want to work offshore all the time as a part of a vessel crew.
I would recommend telecommunications engineering suit that

You may want to concentrate on mechanical engineering systems, as marine engineering is heavily dependent on various aspects of mechnical engineering. Marine engineering involves the design, construction, installation, operation and support of the systems and equipment which propel and control marine vehicles, and of the systems which make a vehicle or structure habitable for crew, passengers and cargo. Marine engineering is allied to mechanical engineering, although the old marine engineer requires knowledge (and hands-on experience) with electrical, electronic, pneumatic, hydraulic, chemistry, control engineering, naval architecture or ship design, process engineering, steam generation, gas turbines and even nuclear technology on certain military vessels. Marine engineering on board a ship refers to the operation and maintenance of the propulsion and other systems such as:electrical power generation plant; lighting; fuel oil; lubrication; water distillation and separation; air conditioning; refrigeration; and water systems on board the vessel. This work is carried out by Marine Engineering Officers, who usually train via cadet ships sponsored by a variety of maritime organizations. There are also training centers at post-secondary institutions that offer marine engineering programs, such as Autonomous Underwater Vehicle research; marine renewable energy research; and careers related to the offshore oil and gas extraction and cable laying industries