Changes

| nameen = Strengthen the Anti-Submarine Patrol in Front of the Naval Base!

| nameen = Strengthen the Anti-Submarine Patrol in Front of the Naval Base!

| req = ''Strengthen the anti-submarine patrol in front of the naval base and ensure the safeness of the transport routes by sea!''

| req = ''Strengthen the anti-submarine patrol in front of the naval base and ensure the safeness of the transport routes by sea!''

*Completion Condition: Obtain 4 victories at the boss node of [[World 1#1-5|World 1-5]].

*Completion Condition: Obtain 4 A-rank victories at the boss node of [[World 1#1-5|World 1-5]].

:*B-rank victories seem to suffice.

| fuel = 300

| fuel = 300

| ammo = 300

| ammo = 300