Never underestimate the value of time that you served in the Navy. Your naval career will have stood you in very good stead for civil employment. The industry recognises the high level of training, responsibility, reliability and management skills of service personnel. The leadership skills that you acquire will give you a distinct advantage over others in the civil world.
If you decide to pursue your career in the Navy for 15 years as general sailor or 20 years as Artificer or 20 years as Officer then you qualify for a generous pension. Think about it: By the age of 35 to 45 you could choose to retire from service with an assured monthly pay check for the rest of your life. This will supplement what you will receive as pay in your second career.
You will continue to enjoy the canteen and medical facilities as you did whilst in service