+1 — Bonus: +26 · Hit: 80% · Range: 15 · Reload: 5 s · Crit chance: 12% · Crit damage: +16% · Cost: 3,500 pearls +2 — Bonus: +27 · Hit: 85% · Range: 15 · Reload: 5 s · Crit chance: 14% · Crit damage: +16% · Cost: 7,500 pearls +3 — Bonus: +28 · Hit: 90% · Range: 16 · Reload: 5 s · Crit chance: 16% · Crit damage: +18% · Cost: 8,500 pearls +4 — Bonus: +29 · Hit: 95% · Range: 16 · Reload: 5 s · Crit chance: 18% · Crit damage: +18% · Cost: 9,500 pearls +5 — Bonus: +30 · Hit: 99% · Range: 17 · Reload: 4 s · Crit chance: 20% · Crit damage: +20% · Cost: 10,500 pearls Total: 39,500 pearls. Example: 8 × 55 Kg Cannon +5 with Explosive Ammunition deal about 832 damage per volley.