Congratulations to your son!
My uncle went to Cal Maritime; his son (my cousin) went to Kingspoint. My uncle worked on ships his entire career ... my cousin worked on oil tankers (I will never forget the late night call telling me his ship was leaving Valdez and he was piloting for the first time

) but now works outside of the industry.
They both have fascinating stories of their travels and have a perspective on other people and places that I can't get as a tourist. They both worked hard for additional certifications -- e.g., masters licenses, piloting licenses for restricted waters -- and had a LOT of responsibility and were well compensated for it.
And having visited Castine, Maine -- I can think of few places that would be nicer to go for parents weekend!