From Destiny 2 Wiki
| Combine with Treasure Coordinates to complete Treasure Maps in the Captain's Atlas.
Map Fragments are earned by completing Ketchcrash activities.
Map Fragments are a material from the Season of Plunder. They have a maximum stack size of 50.
- Rewarded for completing Ketchcrash activities.
- 5 are rewarded for reaching Rank 13 with the Star Chart before resetting once.
- 5 are rewarded for reaching Rank 4 with the Star Chart after resetting at least once.