How to Naval Invade in Borders RTS

Naval Warfare Overview

Naval invasions in Borders RTS enable territory capture across water tiles that land armies cannot cross. Essential on Japan and Oceania, naval power also decides coastal flanks on Europe, North America, and other maps with significant sea lanes.

Smokestack Games integrated shipyards, transport capacity, and amphibious landing mechanics during alpha development inspired by territorial conquest games expanded with military depth. Without naval competence, reaching 80% territory on island-heavy maps is mathematically impossible.

Naval strategy intersects with gasoline management — fleets consume fuel alongside ground vehicles. Build refineries per economy guides before scaling ship production.

Building Your Fleet

Press B to construct ports and shipyards on coastal territory early — delay costs island neutrals to faster naval players. Shipyards produce combat vessels and transport capacity for invasion forces.

Balance combat ships protecting transports against pure transport spam. Unescorted landing forces die to enemy fleets before reaching shore. Consult building tier list for current shipyard and naval unit priorities.

Redeem UNITBOOST from codes before naval-heavy sessions for troop production supporting landing forces. Naval superiority without ground troops to hold captured islands wastes fleet investment.

Executing Amphibious Landings

Scout target islands for defensive density before committing fleets. Feint landings on fortified shores while main invasion hits undefended islands — classic Japan and Oceania tactics.

Time landings when enemy fleets engage elsewhere. Splitting opponent navy attention across two invasion vectors creates windows for successful beachheads on Japan strait maps.

After landing, immediately push inland before counterattacks arrive. Beachheads without rapid expansion revert to enemy control. Follow with expansion principles on captured islands.

Naval Defense & Counter-Invade

Coastal fortifications and anti-naval structures protect against enemy landings while your fleet invades elsewhere. Defense builds on chokepoint islands prevent strait passage.

When invaded, destroy enemy transports before landings complete when possible. If troops establish beachheads, counterattack immediately with local garrisons before siege fortifications appear.

Combine naval mastery with trade routes on Oceania for economic superiority funding sustained fleet operations. Study Oceania and Japan map guides for region-specific invasion routes.

Fleet Composition & Escort Doctrine

Balanced fleets combine escort combat vessels, transport capacity, and recon presence on contested straits. Pure combat fleets win battles but cannot convert victories into territory without transports carrying invasion troops — a recurring failure mode on Japan ranked lobbies.

Escort doctrine assigns combat ships to transport paths rather than hunting enemy fleets across open ocean. Protecting landing convoys matters more than kill counts when approaching the 80% win threshold on island-heavy maps where single successful landings swing five percent territory instantly.

Post-landing, prioritize shipyard construction on captured coastal tiles to sustain reinforcement chains. One-time invasions without follow-up infrastructure get recaptured by enemy counter-landing forces. Permanent naval dominance requires economic backing from economy scaling on captured islands, not just initial assault success.

Weather and visibility mechanics if present in alpha builds may affect naval detection ranges — verify current patch notes via Discord before relying on historical invasion timing advice from earlier alpha versions.