Campaign Day 1.
The shallows narrowed at the volcanic chain's third island, the one the cartographers had marked as Ember's Tooth on the Dominion naval charts and that the Kesseth charts called something else, if they called it anything. The navigable channel between the island's southern reef and the submerged volcanic ridge compressed from a twenty-two-kilometre gap to nine. Nine kilometres. At standard battle formation, nine kilometres was room for a vanguard of thirty ships abreast. Or, from the perpendicular, room for a line of fourteen to cut across the column's head.
Vayne had the tide charts.
