Two main thoughts (disclaimer from someone that has never been married..)
1) Love yourself enough to do what you love, life is too short to live with resentment and lost
if your spouse loves you they will support your passions (unless they have a REALLY good articulable reason like they don't want to support your passion that is unhealthy, destructive, or overly dangerous for their risk tolerance..). If your passion is to ride a motorcycle but someone close to them died in a motorcycle accident
extra sensitivity is definitely called for and best to start off with showing genuine interest and support for her passions (even if only being glad they bring her joy..) but don't give up sailing...
2) The boat
might just be an innocent bystander caught in the crossfire of differences of opinion on priorities.. You mentioned that it is not a financial issue, but at the end of the day it may have to do with a different currency: Time
, the true currency of life in general, boating
, and relationships.. Given a scarcity of time with you, everything that you spend your time on without her is in effect time you are choosing to not spend with her.. May just be an issue of wanting more time with you, or initial experiences boating
, both of which can be addressed by spending more time with shared joys, ideally creating new positive boating experiences, and while boating is a natural escape from stresses on shore make sure it is not being used as an escape from her as opposed to talking through things..
Wish you both the best :-)