Naval warfare arrived in Battlefield 6 Multiplayer with Season 4: Pacific Front on July 21, 2026. Tsuru Reef supports it at launch; Wake Island adds a second naval map on August 18. If you remember one rule, make it this: use the RHIB to move and the RCB-90 to fight.
In this guide, we cover:
- RCB-90 controls and the front ramp
- Weapons, missiles, torpedoes, and mines
- 120mm mortar ammunition
- Best RCB-90 loadouts
- RCB-90 versus the RHIB
- Waves, underwater mechanics, and combat tactics
RCB-90 Overview and Controls
The RCB-90 is a two-seat armored Patrol Boat with a driver and a gunner. It carries a larger health pool than the RHIB but is slower and turns wider. Naval vehicles use the same throttle, reverse, and turning inputs as land vehicles — the main adjustment is momentum, since boats take a moment to regain speed after stopping and waves constantly shift your heading.
The front ramp opens automatically when the boat nears a shoreline or dock, letting anyone on the team deploy from it as infantry, not just the driver’s squad. That makes the RCB-90 a mobile deployment point for beach assaults and port objectives. Some Tsuru Reef objectives can even be captured directly from the boat, letting it contribute without unloading its crew.
RCB-90 Weapons and Equipment
| Equipment | Best use |
| 30mm Autocannon | Boats, shoreline targets, and light vehicles |
| Rotary HMG | Infantry and low-flying aircraft |
| Lock-on missiles | Opening attacks against enemy vehicles |
| Free-fire missiles | Flexible attacks without maintaining a lock |
| IR Smoke | Breaking lock-ons and defeating Guided mortar rounds |
| Wire-guided torpedoes | Directly hunting enemy boats |
| Naval mines | Denying channels and predictable routes |
Open with missiles before exposing yourself to sustained direct fire, then close into autocannon or HMG range. Choose torpedoes when you want an immediate anti-boat weapon, and mines when you want to control where enemy captains can safely go.
RCB-90 120mm Mortar Guide
The gunner can switch between manual aiming and stabilized indirect fire through the map interface, allowing the mortar to hit targets without direct line of sight. Muzzle velocity can also be adjusted to change range and time of flight.
| Mortar type | Best use |
| High Explosive | Accurate, high-damage direct fire |
| Airburst | Wider area damage against grouped targets |
| Guided | Lock-on attacks against land and naval vehicles |
| Smoke | Covering beach assaults, revives, and infantry movement |
| Illumination | Reveals infantry and vehicles on the minimap while descending |
IR Smoke can defeat Guided rounds, so watch for it before committing another shot. Fire Illumination high over suspected routes so it reveals enemies on the way down. The driver should avoid sudden turns while the gunner is aiming indirect fire.
Best RCB-90 Loadouts
| Loadout | Recommended priorities |
| Anti-boat | Autocannon, lock-on missiles, IR Smoke, torpedoes, Guided or HE mortar |
| Shore assault | Rotary HMG, free-fire missiles, IR Smoke, mines, Airburst or Smoke mortar |
| Team support | Threat-based primary, IR Smoke, mines, Smoke or Illumination mortar |
Skip the vehicle XP grind with our BF6 Vehicles Leveling. Choose Self-Play or Piloted mode and unlock weapons, modules, upgrades, skins, and camos for the RCB-90 or any other Battlefield 6 vehicle.
RCB-90 vs. RHIB
The four-seat RHIB is faster and more agile than the RCB-90 but offers little protection. Use it for flanking and squad transport, with passengers adding fire during the approach — not for direct fights against armored patrol boats.
| Feature | RCB-90 | RHIB |
| Seats | 2 | 4 |
| Role | Armored assault and deployment | Fast squad transport |
| Durability | Higher | Low |
| Mobility | Slower, wider turns | Fast and agile |
| Weapons | Autocannon or HMG, missiles, mortar, torpedoes or mines | Mounted machine gun |
| Best use | Naval fights, beach support | Flanking, rotations |
Waves and Underwater Mechanics
Waves push boats off course, disrupt onboard weapon aim, and can briefly lift a vessel out of the water, though swells also provide temporary cover. Open water is rougher; inland channels are calmer but closer to shore-based Engineers. Keep momentum going — an idle boat is an easy target, and beaching effectively takes it out of the fight.
Diving clears existing spots, and players cannot be spotted while deep underwater. Bullets progressively lose damage while travelling through water. Drag and Revive works in water, and players can spawn on squadmates swimming in deep water.
RCB-90 Naval Combat Tactics
- Against boats: approach behind large swells, open with missiles, and close only when your primary weapon benefits. Avoid following directly behind vessels carrying mines or torpedoes.
- Against shore positions: keep moving and use Airburst against exposed infantry or Smoke to cover landings. Approach near cover so the ramp opens in a protected position.
- Defending: Engineers should watch ports, channels, and common landing routes. Destroy an RCB-90 before its deployment ramp establishes a team spawn.
- Capturing objectives: circle inside boat-capturable zones instead of stopping, and use the mortar to deny infantry approaches.
Maps, Progression, and Practice
Tsuru Reef supports naval warfare at launch — see our dedicated Tsuru Reef Map Guide for routes and objectives. Wake Island, Tsuru Reef’s carrier expansion, and Carrier Strike arrive on August 18, adding operational carrier decks and larger combined land, sea, and air battles.
Prioritize the RCB-90 over the RHIB if you want more loadout variety, including driver weapons, missiles, defensive equipment, and mortar ammunition. Verified Portal experiences can be used to practise RCB-90 handling while earning standard Hardware XP, while Custom experiences use modified progression.
The RCB-90 is most effective when its driver manages momentum, approaches from protected angles, and gives the gunner a stable firing platform. Learn when to use missiles, mortar rounds, torpedoes, or mines, and the Patrol Boat becomes one of the strongest tools for controlling Battlefield 6’s waterways.
Check out more Battlefield 6 guides:
- Battlefield 6 Tsuru Reef Map Guide: Layout, Rotations, and Strategy
- Battlefield 6 Season 4 Guide: Release Date, Roadmap, Tsuru Reef & New Weapons
- Battlefield 6 Season 3 Final Phase: High-Value Target Update and Wet Work Event Guide
- Battlefield 6 Naval Warfare Is Coming in Season 4
- Golmud Railway and Grand Bazaar Are Back in BF6
Epiccarry: best wow boost and coaching services
Frequently Asked Questions
When did Battlefield 6 Season 4 start?
Battlefield 6 Season 4: Pacific Front launched on July 21, 2026. It introduced Tsuru Reef, naval warfare, new weapons and attachments, a new Battle Pass, and major REDSEC Ranked changes.
What time did Battlefield 6 Season 4 launch?
Season 4 content became available at 12:00 UTC on July 21, 2026, alongside Battlefield 6 Game Update 1.4.1.0.
What is included in the Battlefield 6 Season 4 roadmap?
Season 4 is divided into three phases. Pacific Front launched on July 21, Top Gun arrives on August 18, and Tidal Strike releases on September 15. Each phase adds new maps, weapons, modes, attachments, events, and Portal or REDSEC features.
What new content was added with Season 4: Pacific Front?
The launch phase added Tsuru Reef, the Dynamic Wave System, the RCB-90 Patrol Boat, the 7.7m NSW RHIB, the EF88, BROD 3, VSSM, two new attachments, the Season 4 Battle Pass, Battlefield Pro content, and a refreshed REDSEC Ranked season.
Is Tsuru Reef the largest map in Battlefield 6?
Yes. Tsuru Reef is the largest Battlefield 6 map released so far. It spreads combat across four main islands—Yumeji, Kaze, Dusk, and Mist—plus two smaller headquarters islands connected by open water.
How does the Dynamic Wave System work in Battlefield 6?
Dynamic waves push boats off course, disrupt onboard weapon aim, and temporarily block sightlines during naval engagements. Diving clears existing spots, bullets lose damage while travelling underwater, and Drag and Revive works in water.
What new naval vehicles were added in Battlefield 6 Season 4?
Season 4 added the 7.7m NSW RHIB and the RCB-90. The RHIB is a fast four-seat transport boat designed for rotations and flanking, while the RCB-90 is a heavier two-seat assault boat with customizable weapons, a mortar, and a team deployment ramp.
What new weapons and attachments are available in Season 4?
The launch weapons are the EF88 Assault Rifle, BROD 3 Carbine, and VSSM Designated Marksman Rifle. The Interdictor sniper arrives during the Top Gun phase. New attachments include the 4-inch Shotgun Barrel Extension, 1P86 LPVO, Canted Vertical Grip, and Hybrid Suppressor.
Can you unlock the EF88, BROD 3, and VSSM for free?
Yes. All three launch weapons are available through free Season 4 Battle Pass tiers. Players do not need to purchase the premium Battle Pass to unlock them.
When is Wake Island coming to Battlefield 6?
Wake Island arrives on August 18, 2026, as part of the Top Gun phase. The reworked map features carrier-based headquarters, destructible bunkers, naval warfare, and an offshore aircraft carrier.
What is included in the Battlefield 6 Top Gun phase?
The Top Gun phase adds Wake Island, Carrier Strike, Gauntlet: Fighter Sweep, the F/A-81F Super Spectre, F-74A Seacat, Interdictor sniper rifle, Tsuru Reef’s carrier expansion, Custom Lobbies, Spectator Mode, the Canted Vertical Grip, and the Hybrid Suppressor.
What are Carrier Strike and Gauntlet: Fighter Sweep?
Carrier Strike is a combined land, sea, and air mode in which teams fight to seize and destroy the opposing aircraft carrier. Gauntlet: Fighter Sweep is a jets-only REDSEC mode focused on two-seat aircraft and wingman coordination.
How does the Battlefield 6 Season 4 Battle Pass work?
The Season 4 Battle Pass contains more than 100 tiers. Players begin with an Intro Path before unlocking four themed paths that can be completed in any order. Completing all four opens the Ultimate and Prestige progression tracks.
The premium Battle Pass grants a 10% bonus to Hardware, Career, and Battle Pass XP. Battlefield Pro increases the total bonus to 15%, adds 25 Tier Skips, and includes an exclusive bonus path.
What changed in REDSEC Ranked Battle Royale in Season 4?
Vehicle Keycards, Main Battle Tanks, and Infantry Fighting Vehicles were removed from REDSEC Ranked. Confirmed Assists now grant the same RP as kills, the full-value kill and assist cap increased from four to eight, and placement RP now extends to the top 22 squads.
Season 4 also introduced new permanent Ranked rewards and a REDSEC-specific M320A1 nerf.
When does Tidal Strike release, and what content does it add?
Tidal Strike releases on September 15, 2026. The final Season 4 phase adds a Collection Event, the Royal Navy Dive Knife, Portal updates, additional optics, and the Phantom Program puzzle involving Fort Lyndon.
Proximity Chat will also begin testing in REDSEC through a Battlefield Labs in Live experience.
