Roll on/roll off shipping is the mainstream method for exporting heavy trucks, semi trailers, and construction vehicles. Compared to container packaging, roll on/roll off shipping is an open cabin loading method, where vehicles drive into the cabin without enclosed cabinet protection. The entire sea transportation process is exposed to salt spray, high humidity, and sea wind erosion. At the same time, the vehicles in the cabin are densely packed, frequently moved and fixed, and the hull is bumpy and shaking, which can easily cause wear and tear on the body, corrosion of components, and appearance damage. Many export manufacturers only provide basic protection and neglect special protection for key parts, resulting in problems such as paint corrosion, rubber aging, and chassis damage after the vehicle arrives at the port, which affects the delivery and customer acceptance of the product. This article provides a detailed explanation of the core areas and key protection points that vehicles must focus on during roll on/roll off shipping transportation.
Firstly, the chassis walking system is of utmost importance for roll on/roll off marine protection. Metal components such as chassis suspension, steel plate springs, axles, wheel hubs, brake air circuits, and chassis screws, which are exposed for a long time, have strong penetration power through sea salt spray and moisture, and are prone to metal oxidation, rusting, and corrosion. Especially for precision small parts such as brake cylinders, air circuit joints, and chassis pipelines, rusting can easily lead to jamming, air leakage, and malfunction, which directly affects the safety of vehicle operation after landing. At the same time, the ship's hull continues to bounce and vibrate, and the chassis fasteners are prone to slight looseness. It is necessary to do anti rust spraying and wrapping protection in advance, reinforce the chassis screws, and eliminate corrosion and loosening hazards.
The rubber and plastic components of the entire vehicle need to be protected against aging. Rubber plastic parts such as tires, shock-absorbing rubber pads, chassis liners, water and gas pipes, sealing strips, belts, etc. are extremely sensitive to salt spray, high humidity, and sea breeze environments. Open roll on/roll off cabins are unobstructed, and long-term exposure to sea winds and alternating temperature differences between day and night can accelerate rubber hardening, cracking, and loss of elasticity, leading to premature aging. At the same time, there is a lot of dust and impurities in the cabin, which can easily adhere to the rubber gaps and aggravate wear and tear. It is necessary to cover and wrap it in advance to isolate salt spray and moisture, and avoid wear and tear before use.
Avoid scratches, rust, and damage to the exterior and paint surface of the vehicle. The paint surface of the cab, rearview mirrors, lighting fixtures, door corners, bumper and other exterior parts are high-risk areas for transportation losses. The vehicles in the roll on/roll off cabin are densely packed, and crew members moving the vehicles, friction between adjacent vehicles, and shaking and bumping of the hull can easily cause scratches on the paint surface and wear on the edges and corners. At the same time, salt spray adheres to the paint surface, and long-term accumulation can form oxidation spots and paint loss, affecting the overall appearance and delivery standards of the vehicle. Full coverage with adhesive protective film is required to reinforce and protect the lighting fixtures and corners that are prone to impact, in order to prevent visual damage.
The engine and electrical system should be well protected against moisture and corrosion. Precision electrical components such as engine intake, exhaust, circuit plugs, batteries, sensors, etc. are most susceptible to moisture and salt spray intrusion. The high humidity environment of sea transportation can easily cause circuits to become damp and short circuited, plugs to oxidize and rust, and sensor signals to be abnormal, resulting in the inability of vehicles to start normally and frequent circuit failures upon arrival at the port. Before shipment, it is necessary to seal the intake and exhaust channels, wrap the circuit interface and battery, and ensure comprehensive moisture-proof sealing.
In summary, the core protection logic of roll on/roll off transportation is to isolate key areas from salt spray, protect vulnerable areas from scratches and wear, and prevent moisture and corrosion of precision components. Targeted protection of the chassis, rubber parts, paint surface, and electrical system can effectively avoid rusting, aging, and damage caused by sea transportation, ensure the vehicle arrives intact at the port, and improve the quality of overseas delivery.
