Considering that being off the grid on a liveaboard is not uncommon, it would be a poor judgement call for the developer to require phoning home to verify licenses, if that is indeed the case.
Has to be a bug. And it didn't show up for me on Google. I took a look at the version history- looks like it might be time for an update…
- 1.0 — 11/28
- 1.0.1 — (not listed)
- 1.0.2 — 11/28
Bug fixes and networking improvements - 1.0.3 — 11/29
Bug fixes and improvements - 1.0.4 — 11/30
Bug fixes and improvements - 1.0.5 — 12/3
Bug fixes and improvement - 1.0.6 — 12/17
Bug fixes and improvements - 1.0.7 — 1/25
Oceanic+ now available in the following languages: (listed) - 1.0.8 — 1/26
Oceanic+ now available in the following languages: (listed)