Clyde Shipyard Launch: Buoyancy & Slipway Physics (2D)

The 3D original is a decorative city-block explorer that morphs Glasgow's Victorian sandstone tenements between a sooty 1900 and a cleaned-up present day — it names River Clyde shipbuilding heritage but never actually simulates it. This 2D companion builds the real mechanic the title only gestures at: a shipyard launch. A hull slides down a greased slipway under gravity and Coulomb friction; the instant its keel crosses the waterline, a buoyancy "spring" (stiffness set by water density, beam and hull length) pulls it toward its Archimedes equilibrium draft, overshooting and settling in a damped oscillation exactly like a real stern-first launch, while quadratic hydrodynamic drag bleeds off its forward speed. Mass, slipway angle, hull beam, ways friction and water density are all genuinely interactive and feed the same formulas shown in the live readout.