How are naval units supplied?

[poesel71]

Manual talks only about land units and how naval units can supply them. But how do they get supplied?
Sorry if its in and I missed it.

[Soar]

They are able to draw supply from friendly ports within the same seazone. If you need to maintain a consistent blockade against a coastal region away from your ports, you can split your fleet into 2 and rotate them each turn so one half is always in supply to recover from the attrition hits.

[poesel71]

Thanks - will any port do or does it have to be a certain size?

[loki100]

any size, the key is to have sufficient surplus food/supply in the region

[Dalwin]

What this means for exploration missions that can be completed from sea zones is that your explorers should end a turn at your most forward port toward the destination. You can get pretty far and still return without losing actual ships, though they will be badly damaged.

[loki100]

for this, if you (perhaps unrealistically) use a large warship it should easily get to the target and back, since it can shed about 7 hits (between cohesion and outright losses), don't send light ships.

now if you have pirates, make sure you save a few as they are invaluable for these distant lands missions as they take no supply so therefore don't suffer losses for being anywhere on the map

[poesel71]

Just noticed the supply overlay. There the sea is either red or blue, blue being supplied.
However I noticed that there are some blue regions which are neighboring owned provinces. But there is no harbour or the harbour exit is towards a different province. So they should not supply ships.
Is this a bug?

[Pocus]

No you can resupply ships even in the absence of harbors.