Neptune and ship maintenance
If ship upkeep did not fall after you picked Neptune, the patron guide’s split is the first test. The island bonus is “ships built on this island are tougher and cheaper to maintain.” The global bonus, once Neptune is the dominant god, is ship speed across the map. Speed is not upkeep.
| Effect | What the guide says it changes | Status |
|---|---|---|
| Island patron | Ships built here: more durability, lower maintenance. Also sardines, garum, mackerel, salt, oysters, caviar, cockles, shells. | 1 source |
| Dominant god | Ship speed for the whole session | 1 source |
So check three things: Neptune is the patron of the island that built the ship, the ship was not built somewhere else and sailed in, and you are not looking at the global speed buff. If all three are true and upkeep is unchanged, report it with the build island, the patron, and the patch version. I am not calling it a confirmed defect from a single secondary article that publishes no percentages.
Questions
Does dominant Neptune reduce upkeep everywhere?
The guide says dominance gives ship speed. Maintenance is the island bonus for ships built there.
How much is the discount?
The article does not print a percent. The cell stays empty.
Sources
Checked 2026-11-06.