Bathysphere
Bathysphere is a members item. No shop sells Bathysphere and no monster drops it, so an Ironman makes it: it takes 63 Construction and gives 60 Construction XP, using Fishbowl, 5 × Bronze bar, 5 × Porthole and 5 × Telescope lenses.
MembersUntradeable
Updated . Sources from the RuneScape Wiki's drop, shop and recipe data (CC BY-NC-SA 3.0), checked 2026-10-09. Item sprite © Jagex.
Ironman verdict
Where the materials come from: Fishbowl (made with 42 Crafting); Bronze bar (sold by Drogo's Mining Emporium for 46 coins); Porthole (from Prawn balls). Making ten takes 10 × Fishbowl, 50 × Bronze bar, 50 × Porthole and 50 × Telescope lenses and gives 600 Construction XP. Reaching level 63 Construction takes 368,599 XP in total; the Construction calculator counts the actions and materials to any target, and the Construction guide has the Ironman training route. Bathysphere is members-only. It is untradeable, so every account, Ironman or not, gets it the same way.
At a glance
- Members
- Yes
- Tradeable
- No
- Monster drops
- None
- Shops
- None
- Recipes
- 1
- Used in
- Nothing
Make it yourself
Needs 63 Construction · 60 Construction XP
Getting the materials as an Ironman
- Fishbowl: made with 42 Crafting
- Bronze bar: sold by Drogo's Mining Emporium for 46 coins
- Porthole: from Prawn balls
- Telescope lenses: from Prawn balls
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