Port environments expose inspection tools to salt spray, humidity, vibration, and constant temperature changes. A Port Corrosion-resistant Electromagnetic Ultrasonic Thickness Probe is built for these conditions. It uses electromagnetic acoustic technology to generate and receive ultrasonic waves directly in conductive metal, so measurement does not depend on a liquid couplant. The probe can inspect pipeline walls, storage tank shells, crane rails, mooring structures, and steel plates with limited surface preparation. Its corrosion-resistant housing and sealed connector reduce damage from moisture and chemical splash, while the rugged cable supports repeated field use. Because the method is non-contact in many setups, it suits painted, coated, or hot surfaces where conventional probes may struggle. Operators can quickly collect wall thickness readings, detect corrosion thinning, and plan maintenance before safety or service life is affected. For port inspection teams, the probe improves access, reduces downtime, and supports reliable data for asset integrity programs. Regular thickness surveys help owners prioritize repairs, verify remaining life, and meet safety and environmental standards in busy terminals. The device is easy to carry, simple to position, and suitable for confined or elevated inspection points. With stable signal performance and durable protection, it delivers practical value for marine maintenance, shipyard service, and heavy industry inspection.