Battlefield 6 Season 4: Naval Warfare Launches July 21, Bringing Massive Sea Battles and Tsuru Reef

Tsuru Reef is described as the largest battlefield in Battlefield 6 and is located off the coast of southern Japan, reportedly larger than the Season 3 map Railway to Golmud, which itself was nearly four times the size of Mirak Valley.
The Tsuru Reef map features aircraft carriers with functional flight decks, enabling carrier-based air operations as part of the naval combat dynamic.
Wake Island returns later in Season 4 and is making its 11th appearance in the Battlefield series, having origins dating back to Battlefield 1942, now redesigned to fit the current game’s scale and naval systems.
The Season 4 trailer teases a homing torpedo attack, signaling new naval weaponry and tactics within the sea-focused update.
The Battlefield 6 player base has exceeded 100 million players and accumulated over 5 billion hours played, with developers calling Season 4 the start of the biggest launch in the franchise history.
Battlefield 6's Season 4, titled Naval Warfare, launches on July 21, 2026 — bringing large-scale sea combat to the franchise as a core mechanic for the first time. Gaming Trend reports the update centers on Tsuru Reef, the biggest map in the game's history, set off the coast of southern Japan.
Developers are calling Season 4 the start of the biggest launch in Battlefield franchise history. The game has already passed 100 million players and 5 billion hours played, according to GamesBeat.
Tsuru Reef is the flagship map of Season 4. Macon.com describes it as larger than Season 3's Railway to Golmud map, which itself was nearly four times the size of Mirak Valley. That makes Tsuru Reef the largest map in Battlefield 6 by a wide margin.
The map features islands, open water, and amphibious operations across land, sea, and air. Aircraft carriers are part of the map, complete with functional flight decks. Players can launch carrier-based air strikes directly from the deck, adding a new layer to combat, according to GamesBeat.
Season 4 adds two new naval vehicles. Players can pilot the RCB-90 Patrol Boat and the 7.7m NSW RHIB, a smaller rubber combat craft. Four new weapons also join the arsenal, including a new sniper rifle, per Gaming Trend.
The Season 4 trailer teases a homing torpedo attack, signaling new sea-based tactics players have not seen in Battlefield before. A new Ranked Battle Royale mode arrives alongside the update, bringing fresh rewards for competitive players, according to The News Tribune.
Wake Island is coming back later in Season 4. Herald Sun notes this is the map's 11th appearance in the Battlefield series. Its roots go back to Battlefield 1942, making it one of the most iconic locations in the franchise's history.
The island has been redesigned to fit Battlefield 6's scale and new naval systems. The expanded map size and sea combat mechanics give Wake Island a fresh feel, even for longtime fans who know the layout well, according to GamesBeat.
EA and Battlefield Studios say Season 4 is more than a content drop. With over 100 million players and 5 billion hours logged, they are calling this the start of the franchise's biggest-ever launch phase. The naval focus marks the first time sea combat has been a core mechanic rather than a side feature, per Gaming Trend.
Dynamic waves and evolving multi-environment battles — water, air, and ground — are central to the Season 4 experience. Trailers and gameplay demos have already dropped ahead of the July 21 release date, giving players an early look at the new systems, according to Macon.com.
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