AC Black Flag Resynced Antocha Wreck — All 8 Chests
Find all eight Antocha Wreck chests in AC Black Flag Resynced, including the Mortars Ultimate Plan, exact wreck coordinate, route order, rewards, and missing-chest fixes.
The Antocha Wreck at (600, 636) contains seven Reales chests and one Secret chest holding the Mortars Ultimate Plan. The dive is split between scattered wreck pieces and the two halves of the main ship, so following a fixed route is much easier than searching at random.
Quick answer: unlock the Diving Bell during Sequence 6, Memory 1: Diving for Medicines, then sail to Antocha Wreck at (600, 636). Loot all eight containers for 6,910 Reales plus the Mortars Ultimate Plan. The plan is in the southernmost wreck piece.
Antocha Wreck Rewards at a Glance
| Order | Area | Reward |
|---|---|---|
| 1 | Northwest wreck piece | 840 Reales |
| 2 | Center, below the bow | 1,000 Reales |
| Secret | Southernmost wreck piece | Mortars Ultimate Plan |
| 3 | East ship, front hull | 1,050 Reales |
| 4 | Rear ship, vegetation entrance | 1,000 Reales |
| 5 | Inside the rear ship | 1,000 Reales |
| 6 | Higher interior compartment | 1,020 Reales |
| 7 | Northeast end of the rear ship | 1,000 Reales |
The Secret plan container is tracked separately from the seven normal chests. If the map shows 7/7 chests but the location is not complete, you probably still need the Mortars Ultimate Plan Secret.
How to Unlock Antocha Wreck
Continue the main story until Diving for Medicines, the first memory in Sequence 6. That mission gives the Jackdaw its Diving Bell and uses San Ignacio as the tutorial wreck. When the mission is complete, Antocha and the other free-roam shipwrecks become available.
Antocha lies northwest of Great Inagua in the Gibara region. Sail to (600, 636), move onto the diving-location marker, and interact with the bell to begin the dive.
All Antocha Wreck Chest Locations
1. Northwest Chest — 840 Reales
From the Diving Bell, swim northwest toward the separated piece of the first ship. The chest is beneath the large section of wreckage rather than on its upper surface.
2. Center Chest — 1,000 Reales
Turn south from the northwest pickup and look for the bow section near the center of the dive area. Descend below the bow to find the chest tucked against the wreck.
Secret South Chest — Mortars Ultimate Plan
Continue to the southernmost piece of the first wreck. Enter the broken ship section and open the larger Secret chest inside. This awards the Mortars Ultimate Plan, which unlocks the final Mortars tier at a fully upgraded Great Inagua Harbormaster.
The Secret does not count toward the seven normal chest icons. Use the all 12 Ultimate Plans guide for its installation cost and the other final Jackdaw upgrades.
3. East Chest — 1,050 Reales
Swim east to the second major shipwreck. Enter its front hull and check the interior corner. This is the highest-value Reales chest in the dive.
4. Vegetation Chest — 1,000 Reales
Move toward the rear half of the same ship. The next group of four chests is close together. The first sits near coral and underwater vegetation at the start of the rear wreck section.
5. Inside Chest — 1,000 Reales
From the vegetation chest, swim north into the ship. Check the interior corner before leaving the hull.
6. Higher Compartment Chest — 1,020 Reales
Exit the ship, swim around its rear, and look for an opening that leads into the higher part of the hull. Enter through that rear access and rise inside the wreck to reach the chest.
This vertical entrance is the easiest pickup to miss. If your counter is stuck at six of seven normal chests, check this compartment first.
7. Northeast Chest — 1,000 Reales
For the final normal chest, continue to the northeastern limit of the dive area and enter the back of the ship's interior. Loot the chest at the far end to finish the normal chest counter.
Fast 8-Chest Route
Use this order to avoid repeatedly crossing the shark patrol area:
- Northwest wreck piece.
- Center bow.
- Southern Secret plan chest.
- Eastern front hull.
- Vegetation entrance at the rear ship.
- Interior corner.
- Rear opening into the higher compartment.
- Northeastern back interior.
Stay close to wreckage and underwater vegetation whenever possible. Open-water crossings expose Edward to sharks, while the ship pieces provide cover and a clear route reference.
Antocha Wreck Missing Chest Checklist
- Map says 7/7 but the location is incomplete: collect the Secret chest in the southernmost wreck piece.
- Map says 6/7: check the higher compartment reached from the rear exterior opening.
- You cannot start the dive: finish Diving for Medicines and make sure the Jackdaw has the Diving Bell.
- You found the plan but cannot buy the upgrade: complete This Old Cove and fully upgrade the Great Inagua Harbormaster.
Frequently Asked Questions
Where is Antocha Wreck?
Antocha Wreck is at (600, 636) in the Gibara region, northwest of Great Inagua.
How many chests are in Antocha Wreck?
There are eight reward containers: seven normal Reales chests and one Secret chest containing the Mortars Ultimate Plan.
Where is the Mortars Ultimate Plan?
It is inside the southernmost wreck piece at Antocha. From the Diving Bell, clear the northwest and center pickups, then continue south and enter the broken hull containing the larger Secret chest.
When does the Diving Bell unlock?
The Diving Bell unlocks during Sequence 6, Memory 1: Diving for Medicines. Complete that mission to access Antocha and the other open-world shipwrecks.
Sources
- IGN — all Antocha Wreck chest routes and rewards
- GamesRadar+ — all Antocha Wreck chests
- Game8 — all shipwreck locations and Secret rewards
Related: All 12 Ultimate Plans | Jackdaw Upgrade Costs | Collectibles Checklist | Ships & Naval Combat | Community Chests