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. Full Ahead inverts that for the work it supports offline: the browser or installed app may retain previously loaded query data, not a complete offline record, and maintenance job completions, stock movements and requisitions entered with no link are held on the device with their own timestamp without guaranteeing office acceptance. Check the office record during your parallel review; reconnect delivery and refusal handling remain unproved. Nothing needs a shore-side replication server.