Games like Professional Ship Simulator
Games like Professional Ship Simulator include Euro Truck Simulator 2, BeamNG.drive, American Truck Simulator, Universe Sandbox, and Train Simulator Classic. We matched them by the tags players give Professional Ship Simulator on Steam (Naval, Simulation, Realistic, Open World, and Physics): closest matches first, and among equally close ones the better-known games.

Euro Truck Simulator 2
Shared: Simulation · Open World · Realistic

BeamNG.drive
Shared: Simulation · Realistic · Physics

American Truck Simulator
Shared: Simulation · Open World · Realistic

Universe Sandbox
Shared: Simulation · Realistic · Physics

Train Simulator Classic
Shared: Simulation · Realistic · Open World

CarX Drift Racing Online
Shared: Simulation · Moddable · Physics

Kerbal Space Program
Shared: Simulation · Physics · Moddable

Fernbus Simulator
Shared: Simulation · Realistic · Open World

Garry's Mod
Shared: Moddable · Physics · Sandbox

MudRunner
Shared: Simulation · Realistic · Open World

Car Mechanic Simulator 2021
Shared: Simulation · Realistic · Moddable

Assetto Corsa
Shared: Simulation · Realistic · Open World

SnowRunner
Shared: Simulation · Realistic · Open World

City Car Driving
Shared: Simulation · Open World · Realistic

X-Plane 11
Shared: Simulation · Realistic · Open World

Stormworks: Build and Rescue
Shared: Open World · Physics · Sandbox

Seafarer: The Ship Sim
Shared: Naval · Simulation · Realistic

Motor Town: Behind The Wheel
Shared: Simulation · Open World · Realistic

Car Mechanic Simulator 2018
Shared: Simulation · Realistic · Driving

Taxi Life: A City Driving Simulator
Shared: Simulation · Open World · Realistic

Construction Simulator
Shared: Simulation · Open World · Realistic

Cities: Skylines II
Shared: Simulation · Realistic · Sandbox

Forza Horizon 5
Shared: Open World · Realistic · Simulation

Farming Simulator 19
Shared: Simulation · Realistic · Open World