VECTOR STUDIOS
Building Maritime Simulator: Physics-Driven Hydrodynamics in Modern PC Simulation
Maritime Simulator was conceived from a strict simulation-first philosophy. While many maritime games settle for arcade boat handling—where boats steer like cars on a blue textured plane—we set out to engineer authentic naval hydrodynamics. In modern PC simulation, players demand physical fidelity: genuine water displacement, inertia, rolling metacenter stability, and the unforgiving chaos of the open sea.
- Multi-Compartment Buoyancy: Evaluating local submerged volumes across hull cells eliminates the artificial 'rocking' of single-point physics.
- Free Surface Effect Modeling: Dynamic internal water sloshing creates authentic emergency salvage gameplay.
- GPU Jacobian Displacements: Procedural wave crest foam based on surface compression math delivers photorealistic ocean visuals with minimal overhead.
- Simulation-First Loyalty: Niche PC gamers value authentic operational complexity over simplified casual controls.
Step onto the bridge of commercial tugs, pilot vessels, and salvage craft in our high-fidelity Thames VTS simulation.
View on Steam Store →1. Ocean Surface Math: Cascaded FFT & Gerstner Spectra
Authentic maritime simulation requires modeling wave energy across multiple spatial scales simultaneously. Our water engine implements a dual-layer approach:
- Deep-Water Swells: Computed via Fast Fourier Transforms (FFT) utilizing the Phillips wave spectrum. This models long-wavelength oceanic swells influenced by simulated wind speed, fetch distance, and planetary Coriolis effects.
- Capillary Ripples & Crest Choppiness: Generated via high-frequency procedural Gerstner trochoids evaluated directly on the GPU. By calculating the Jacobian determinant of the surface displacement, our shaders identify where wave peaks become unstable, automatically spawning dynamic whitecaps, subsurface aeration, and foam trails.
2. Volumetric Hull Slicing & Hydrostatic Buoyancy
Rather than treating a ship as a single rigid body with a center-point buoyancy spring, Maritime Simulator slices the 3D hull mesh into dozens of discrete volumetric compartments. At every physical tick (120Hz):
- Each hull segment evaluates its submerged volume against the instantaneous local wave height.
- Archimedes' buoyant force vector is calculated normal to the local displaced water volume.
- Dynamic center of buoyancy (CB) continuously shifts relative to the ship's center of gravity (CG).
- The resulting righting arm (GZ curve) determines authentic roll damping, listing under beam seas, and realistic capsizing hazards.
3. Dynamic Ballast & Flooding Damage Simulation
Emergency operations are at the heart of our gameplay. When a vessel takes on water or breaches a hull plate against submerged wreckage, water volume enters specific compartments. Players must manage electrical bilge pumps, calculate ballast transfer to counteract dangerous list angles, and monitor free surface effects—where sloshing internal water severely degrades vessel stability.
4. Raymarched Maritime Fog & Atmospheric Scattering
Nautical navigation in dense weather relies heavily on radar and foghorns. We developed a custom raymarched volumetric fog solution with Mie forward-scattering. Lighthouse beams and vessel searchlights cut through maritime sea mist with authentic volumetric attenuation, while dynamic Beaufort scale wind models whip sea spray particle emitters off wave crests.
5. Early Access Feedback & Steam Community Collaboration
Launching on Steam allowed us to collaborate directly with real-world mariners, tug captains, and simulation enthusiasts. Community feedback directly guided our diesel engine torque curves, towline catenary physics, and rudder stall angles, proving that dedicated simulation niches reward deep mathematical integrity.