Overview
- Sonar Ops is a limited-time event available to all players starting at Headquarters level 6.
- The event begins on Wednesday, August 13th, 2025, and runs for 10 days until August 23th, 2025.
- It is accessible from the main base, located off the beach side of the island, and appears as a square area surrounded by blue buoys in each corner.
- Unlike other Boom Beach events, Sonar Ops do not require Troops, Gunboat Abilities, or use of the main island.
- The goal is similar to Battleship — you use depth charges to locate and destroy hidden submarines within a grid ranging from 3x3 up to 10x10.
- Destroy Submarines
to earn Sonar Coins , which can be exchanged in the Sonar Shop.
Sonar Ops Rules
- Players must blindly drop Depth Charges to destroy submarines hidden in a sea zone ranging from 3x3 up to 10x10.
- To obtain depth charges, players need to destroy enemy bases on the archipelago:
- Each day, the first 5 Outpost and Mercenary battles grant 3 depth charges. After that, each battle gives 1 charge.
- 2 Depth Charges can be collected from watching an ad.
- Explosive Charges can be unlocked starting from Sea Zone 6.
- You will receive 2 Explosive Charges in each event. Once you have unlocked them, they will automatically be available at Sea Zone 1 in the next Sonar Ops event.
- The only other way to obtain them is by purchasing offers with real money.
- Explosive Charges affect 6 random tiles.
- Submarines give Sonar Coins when hit or destroyed:
- 10 Coins when hit.
- 50 Coins when destroyed.
- Once all submarines in a zone are destroyed, players move on to the next marine zone.
- Submarines vary in size (2 to 5 tiles) depending on the zone: (A submarine of size 5 cannot appear in a 4x4 grid.)
| Size | 2-Tile Sub | 3-Tile Sub | 4-Tile Sub | 5-Tile Sub |
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| Number of Submarines per Sea Zone | |||||
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| Sea Zone | Size | 2-Tile Sub | 3-Tile Sub | 4-Tile Sub | 5-Tile Sub |
| Zone 1 | (3x3) | 0 | 1 | 0 | 0 |
| Zone 2 | (4x4) | 2 | 0 | 0 | 0 |
| Zone 3 | (5x5) | 2 | 1 | 0 | 0 |
| Zone 4 | (6x6) | 1 | 1 | 1 | 0 |
| Zone 5 | (7x7) | 1 | 2 | 1 | 0 |
| Zone 6 | (8x8) | 2 | 2 | 0 | 1 |
| Zone 7 | (9x9) | 2 | 2 | 1 | 1 |
| Zone 8 | (10x10) | 2 | 2 | 2 | 1 |
| Zone 9 | (10x10) | 1 | 2 | 2 | 1 |
| Zone 10 | (10x10) | 2 | 1 | 2 | 1 |
| Zone 11+ | (10x10) | 2 | 1 | 1 | 1 |
Zone
Zone 1
Zone 2
Zone 3
Zone 4
Zone 5
Zone 6
Zone 7
Zone 8+
Rewards
For every 5 submarines destroyed, players receive a reward (either Depth Charges 
or Sonar Coins 
):
Submarines destroyed
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5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 80 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reward |
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| x5 | x10 | x10 | x50 | x50 | x10 | x75 | x75 | x20 | x100 | x100 | x200 | x30 | x250 | x500 |
- At the end of the event, the remaining unused charges are converted to Sonar Coin.
- 1 Deep Charge = 5 Sonar Coin .
- 1 Explosive Charge = 30 Sonar Coin .
- 1 Deep Charge = 5 Sonar Coin
Strategies
- Just like the original Battleship game, having a strategy is essential — don’t just drop charges at random.
- Start by naming the grid:
- Use A, B, C, D... for rows.
- Use 1, 2, 3, 4... for columns.
- Fire at every other tile, for example: A1, C1, B2, D2, etc.
- When a submarine is hit, target adjacent tiles.
- For submarines of size 3 or more, continue attacking in the same direction — submarines are always straight-shaped (never diagonal or L-shaped).
- Important: When a submarine is destroyed, all surrounding tiles (in a 1-tile radius) are revealed.
History
| Number | Date | New Features |
|---|---|---|
| 1st Sonar Ops | 13th - 23rd August |
Gamemode, Sonar Shop, Sonar Ops Offers |
| 2nd Sonar Ops | 3rd - 12th October | Obtaining Depth Charges by watching an ad Charge Convertion |
Trivia
- The Player gets 85 Depth Charges and 1400 Sonar Coins simply by collecting the Rewards for destroyed Submarines .
- Sonar Ops was originally scheduled for 8th August but was delayed.
- Explosive Charges Artwork got changed between the first and the second Sonar Ops from 3 blue Depth Charges to a unique red variant.
old Artwork
| Events | |
|---|---|
| Cycle of Evil | Hammerman Strikes Back (Threat) • Dr.T Threat Stages • The War Factory • Imitation Game |
| Removed Cycle of Evil | Hammerman's Fleet • Hammerman Strikes Back • Terror Stages • Dr.T Stages |
| Special Events | Mega Crab • Mega Turtle • Warships • Leader Event • Sonar Ops |
| Others | Boom Pass • Shop of Evil • Training Grounds • Commander's Crash Course • TMOB |
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Current available content appears in blue. Formerly available content that is no longer in the game appears in gray. Upcoming content that is not yet in the game appears in magenta. | |