by mbachtold
The rulebook on page 11, under Enmity and Costs on an Island states:Price at islands: When paying an island (for example, to buy goods), add one gold to the price for each enmity of yours on the island.
I haven't seen the rules for repairing at an Island, but if they refer to "paying the island", I would expect the rule above to apply, even if the repair action isn't specifically called out.