Replication windows versus continuous sync
In a classic shipboard-database deployment, the ship and the office are only as aligned as the last replication. Between windows the superintendent is reading yesterday's fleet, and conflicts are resolved by whichever side replicated last. Full Ahead inverts that: the browser or installed app holds a working copy of the vessel's recent data, every action taken offline is queued in a sync outbox with its own timestamp and actor, and the queue drains automatically the moment any link — VSAT, LTE in port, crew Wi-Fi — appears. Nothing waits for a scheduled job, and nothing needs a shore-side replication server.