OpenFront Transport Landings

Run COAST before you launch a Transport Ship

Choose a reachable Coast, identify Opposition, set the troop Allocation, arrange a Warship Screen, and name the Termination condition. Launch only when the landing opens a useful second attack and you can still defend home. A Transport Ship costs no Gold, but it removes troops immediately, exposes them at sea, and normally loses 25% when recalled.

That five-part COAST check is the difference between a naval shortcut and a floating reserve that never returns intact.

OpenFront.io V28 Tutoriel et Guide

The COAST Check Table

COAST check	Evidence to see before launch	Go signal	Stop signal
Coast	Same connected water and a useful landing edge	Beach creates a second route or captures an exposed asset	Click produces no boat, route ends at an irrelevant shore
Opposition	Enemy Warships, coastal troops, nearby third parties	Escort can enter first and land force can survive contact	Unscreened Warship patrol or defender can concentrate before arrival
Allocation	Current troops, slider, home reserve, active boat count	Named wave budget leaves the home front stable	Third boat is merely replacing judgment with more exposure
Screen	Friendly Warship patrol lane and timing	Escort controls the final approach before transport arrives	Escort is repairing, outside the water component, or chasing trade traffic
Termination	A visible cancel or reinforce rule	Beachhead takes a second tile and receives land support	First wave stalls, route changes, or home reserve breaks

Choose a reachable coast

A Transport command begins with the territory you click, but it does not promise to land on that exact interior tile. The path logic first looks for a reachable shore owned by the clicked target, then looks for your closest source shore that can reach that destination through water.

Start the Coast check at water-component scale. Trace the sea, lake, or river-like channel between your territory and the target. A narrow land bridge can divide two bodies of water even when they appear visually close.

Use a three-tile landing test:

• Tile one is the beach the boat will conquer or attack
• Tile two is the next territory needed to make the beach more than a dot
• Tile three is the route back to friendly support or toward the operation’s objective

Read opposition before you put troops on the water

Opposition has three layers: interception at sea, resistance on the beach, and exploitation by a third party. The sea layer deserves priority because a Transport Ship is not a fighting ship. A released Warship searches for hostile units and gives Transport Ships its highest target priority.

Draw an imaginary 130-tile danger band around the final approach. If your Transport must enter that band before your escort can contest it, assume the defender gets the first useful response.

Allocate waves from a shrinking reserve

The attack-ratio percentage applies to the troops available when that individual command is sent. The client multiplies current troops by the displayed ratio. The boat then removes that force from the player immediately.

Suppose you have 900,000 troops, the slider shows 20%, no growth occurs during the clicks, and all three Transport slots are free:

• Boat one takes 180,000, leaves 720,000
• Boat two takes 144,000, leaves 576,000
• Boat three takes 115,200, leaves 460,800

Set the reserve first, then derive the wave cap. If the home coast needs 500,000 to survive the strongest plausible neighbor attack, the third boat is forbidden.

Screen the crossing

Screening is a sequence, not a unit count. The escort must arrive in the contested lane before the Transport, hold a patrol point that covers the likely interceptor path, and remain healthy enough to stay there until the boat passes.

Build the route in three timed zones:

• Departure zone: your source shore and the first stretch of water
• Transit zone: open water where you can still cancel and return
• Terminal zone: the final 130 tiles around likely enemy Warship positions and the landing shore

Cancel deliberately

Use four termination triggers:

• Interception: enemy Warship enters the terminal lane before your screen controls it
• Ownership change: the chosen beach is no longer the target that made the operation useful
• Home breach: a neighbor attacks and the remaining reserve falls below its floor
• Bridgehead failure: the first landing cannot take a second useful tile or connect

A normal manual cancel marks the active Transport as retreating. When it completes that return, 25% of the troops aboard die and 75% rejoin the owner.

Key facts

• Maximum of three active Transport Ships
• Transport movement is one water tile per tick
• Warships prioritize Transport Ships over other targets
• A boat carrying 180,000 normally returns about 135,000 after a 25% retreat loss
• The game can reject a launch before a boat exists when the target is yourself, the relationship does not allow an attack, no reachable target shore exists, or all three slots are occupied

For island defense and naval strategy, read the Naval guide. For fleet composition, read the Warship veterancy guide. For team roles, read the Team Games guide.