101Leafy researched the games.
Anchor Hammer+

Enormous anchor-like Hammer packed with a sailor's passion for the sea.
| Class | Hammer |
|---|---|
| Rarity | 4 |
| Attack | 728 |
| Water | 290 |
| Slots | 1 |
| Price | 4,900z |
Upgrades
| Upgraded from | Anchor Hammer |
|---|---|
| Upgrades into | Anchor Crusher |
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 720.