LEGO Set 8480-1-b1 Submarine boat (1996 Technic) | Rebrickable - Build with LEGO
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Search Sub : Set 8250-1 | BrickLink
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SUNDAYA Technic Submarine Building Blocks, 1498 PCS Military Ship Building Kits, Battle Ship Construction Toy Gift for Adult and Kids, Compatible with Lego : Amazon.co.uk: Toys & Games
Building a Lego-powered Submarine 2.0 - magnetic couplings - YouTube
LEGO 8250 Technic Search Sub | BrickEconomy
Review: 8299 Search Sub | Brickset: LEGO set guide and database
MINI] Submarine - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums