I assume that you want to know the scope of electrical engineer in merchant navy.The main position for which you can apply for:
Marine Engineers: Marine Engineers have the complete responsibility of the ship’s engine room. The main personnel in this department is the Ship engineer/chief engineer who ensures safe and economic running of all engines, boilers, electrical, refrigerating and sanitary equipment, deck machinery and steam connections aboard the ship. He supervises the work of the engine-room crew and is assisted in his duties by the Second, Third, Fourth and Fifth Engineers and other junior personnel.
Second engineer looks after the day to day work in the engine room. Third engineer is in charge of the main engine, spare parts for the main engine, all purifiers, boilers, compressors etc. Fourth and fifth engineers are in charge of the numerous generators onboard ship as well as certain small pumps.
Besides the officers of the navigation and engineering teams most ships have a Radio Officer and an Electrical officer. The Radio Officer is in charge of the radio room and handles the operation of the wireless and transmitting of signals. Electrical Officer is responsible for the functioning and handling of all electrical equipment onboard the vessel. There is another one named seaconny, who ensures that the ship is on course and that the gangway at port is well-guarded.
The starting salary varies between Rs 15,000 to Rs 20,000 a month. A person gets a variety of benefits such as free food, accommodation, paid leave, two-way free passage and facilities for families. In other words, the salary can be saved totally while one is on ship. The perquisites include bonus, holiday travel and other annual benefits.