If someone is going to block your port, make sure that you have enough ballista0ships in the yard. For example, 20 sec. before the attacking enemy gets there, transport all your attack ships like flame throwers and catapult ships, and when the attacking enemy hits, return them to your town. That way they would do more damage. They are attack ships, not defensive ships, this way they will kill more at once instead of dying off and not killing as much.

Source: techsta.co.nz

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