The drone is an unlockable exploration tool usable on almost all vessels. The developer says it helps spot shipwrecked people and points of interest, especially in rough weather. Its exact unlock requirement and control keys are 待确认.
What the drone does
The Career Update added the drone as a new way to view the maritime world from above. Official notes describe exploration and rescue as its main uses. It can help when waves or weather block the view from your vessel. The notes do not claim the drone can complete rescue actions by itself.
Range and restrictions
The developer says drone range is limited and some harbour areas are no-fly zones. “Almost all vessels” is the official wording, so do not assume every ship can launch one. Whether a specific ship or mission permits drone use should be checked in the current build. The exact range in metres and a full no-fly-zone map are 待确认.
Why the drone helps at sea
The developer specifically names rough weather, heavy seas and a poor line of sight from the ship as situations where the aerial view helps. It also mentions shipwrecked people and points of interest as things players may spot. This is an observation tool, not a substitute for approaching a survivor or completing a cargo task. A mission may still require a vessel interaction after you locate the target.
The official game site groups the drone with cranes, water cannons and rescue equipment as interactive tools. It also says ocean currents and changing weather affect voyages. Those surrounding systems explain why scouting can be useful, but the source does not promise an aerial marker for every objective. The exact mission-specific uses remain 待确认.
Unlocking and vessel availability
The Career Update calls the drone unlockable but does not publish its requirement in the reviewed release notes. It says the device works on almost all ships, so a list of supported and unsupported vessels cannot be inferred from the wording. Earlier beta notes reported a problem interacting with the drone on Big Trip, but that is a historical issue. Current Big Trip behavior is 待确认.
Multiplayer and update changes
The full-release update improved synchronization for drones and binoculars in multiplayer. It also fixed a crash involving a player changing to an inspection vessel while another player used a drone. These are release-specific improvements, not instructions for launching or controlling the drone. Older reports about drone behavior may describe a different build.
Evidence
The official game site lists drones among interactive tools, and the change log describes the unlock and restrictions. Exact controls, purchase cost and unlock level remain 待确认.