Hi guys, if tired to get by 10 or 20 BP from attakcing here is solution! I discovered that how to earn fast BP! buy 8 or 10 brute, remaining buy all gunner, on the map find a big blue fish with 4 star. send to your ship with full of brute and gunner to fight with blue fish with 4 stars. it will take 5-7 hours. Finally you'll get at least 1000 BP up to 2000 BP. I tried about 5-6 times. and earned almost 10000 BP. Believe me guys, it really works.