diff --git a/app/Jobs/ProcessFleetArrival.php b/app/Jobs/ProcessFleetArrival.php
index 3e271359f..cedb837c2 100644
--- a/app/Jobs/ProcessFleetArrival.php
+++ b/app/Jobs/ProcessFleetArrival.php
@@ -19,9 +19,18 @@ class ProcessFleetArrival implements ShouldQueue
     use Queueable;
     use SerializesModels;
 
-    public int $tries = 3;
-
-    public int $timeout = 120;
+    /**
+     * Allow several lock-contention retries while a large battle holds the
+     * destination lock (release delay is 30s; see handle()).
+     */
+    public int $tries = 10;
+
+    /**
+     * Must be >= the destination Cache::lock TTL (600s) so a long battle cannot
+     * be killed by the queue worker while still holding the lock.
+     * Issue #363 noted multi-million-unit battles can take 10s+; leave headroom.
+     */
+    public int $timeout = 600;
 
     public function __construct(public int $missionId)
     {
diff --git a/app/Services/FleetMissionService.php b/app/Services/FleetMissionService.php
index 8cd567d53..2637e9f46 100644
--- a/app/Services/FleetMissionService.php
+++ b/app/Services/FleetMissionService.php
@@ -713,10 +713,9 @@ public function processDueMissionEventsForMission(FleetMission $mission): void
     {
         $lockKey = $this->getMissionDestinationLockKey($mission);
 
-        // Lock TTL of 180s provides headroom for long-running battles.
-        // A TTL shorter than the actual processing time risks expiring mid-transaction,
-        // allowing another worker to enter and observe uncommitted writes.
-        Cache::lock($lockKey, 180)->block(10, function () use ($mission) {
+        // Lock TTL must stay >= ProcessFleetArrival::$timeout so a long battle cannot
+        // outlive the lock and let another worker observe uncommitted writes.
+        Cache::lock($lockKey, 600)->block(10, function () use ($mission) {
             DB::transaction(function () use ($mission) {
                 $currentTime = (int) Date::now()->timestamp;
 
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index 410df2ad1..b7ee4a866 100644
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -27,7 +27,9 @@ if [ "$role" = "scheduler" ]; then
         sleep 60
     done
 elif [ "$role" = "queue" ]; then
-      php /var/www/artisan queue:work --queue=fleet-arrivals,default --verbose --no-interaction
+      # --sleep=0.5 keeps delayed fleet arrivals snappy (default sleep is 3s).
+      # --timeout=600 matches ProcessFleetArrival::$timeout for large battles.
+      php /var/www/artisan queue:work --queue=fleet-arrivals,default --sleep=0.5 --timeout=600 --verbose --no-interaction
 elif [ "$role" = "reverb" ]; then
     php /var/www/artisan reverb:start --host="${REVERB_SERVER_HOST:-0.0.0.0}" --port="${REVERB_SERVER_PORT:-8090}"
 elif [ "$role" = "app" ]; then