Fleet maintenance
Fleet maintenance is a periodic fee which is payed off every 15 days by fleet leader or by its deputy. It depends on the amount of slots for members in fleet.
Unit of measurement for fleet maintenance is reporting period. Its duration is 15 days, first reporting period starts at the day of fleet creation. First reporting period - as a gift the type of maintenance - VIP.
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Every next reporting period while paying you can choose a type of maintenance.
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