This depends on the particular department and your roster. Please bear in mind that you will never have a whole day of free time during the contract term, but probably a few hours which you can of course use to go ashore.
Although the time is limited, with a little planning you can gather great impressions of our exotic destinations, take a sightseeing tour or simply stop off at a cosy café and enjoy the new surroundings.
via Crew Welfare:
The Crew Welfare Committee is a group within the crew that takes care of the welfare of the entire crew. This also means that they host parties and barbeques, arrange game or movie nights, offer sports and dance classes or organise group excursions.