Why Are Modern Commercial Landing Craft Made of Aluminum?

For any commercial operation, fuel costs represent a significant long-term expense. Thanks to the high strength-to-weight ratio of marine-grade aluminum, aluminum landing craft can reduce hull weight by 40% to 50% compared to steel vessels of the same size, while maintaining structural integrity. Taking our 10-meter aluminum landing craft as an example, its 4-ton payload capacity combined with a lightweight hull results in approximately 25% lower fuel consumption than a steel vessel at the same speed. These savings are particularly significant in daily round-trip operations—calculated over 200 voyages per year, fuel costs alone can be reduced by thousands of dollars. At the same time, the lighter weight frees up space for payload, allowing every drop of fuel to transport more cargo, directly boosting the economic efficiency of each voyage.

Corrosion of the hull in the marine environment is a continuous and insidious process. Steel vessels require dry-docking for rust removal and repainting every 1 to 2 years, with each session costing tens of thousands of dollars, and the downtime disrupts business continuity. Marine-grade aluminum (such as 5083 alloy), through its magnesium-alloyed design, forms a dense protective oxide layer on the surface that naturally resists seawater corrosion. This means aluminum landing craft do not require regular anti-corrosion treatment, and routine maintenance is limited to cleaning and inspection. Calculated over a ten-year operational cycle, the maintenance costs for aluminum landing craft are only 30% to 40% of those for steel vessels. For a small business owner with multiple vessels, these savings are sufficient to serve as seed capital for new business expansion.

Commercial clients’ needs are rarely standardized. Some require the addition of a deck crane, others wish to modify passenger seating, and still others request adjustments to the gangway width to accommodate specific beach gradients. The advantage of aluminum landing craft lies in their excellent workability. Marine-grade aluminum offers excellent weldability and machinability, allowing our factory to flexibly cut, weld, and modify vessels according to customer requirements without compromising the structural integrity of the hull. A client operating an island resort once asked us to install a side door on a 9-meter aluminum landing craft so that divers could enter the water directly from the side—this modification was completed in just two weeks. In contrast, steel boats are costly and time-consuming to modify, while fiberglass boats are virtually impossible to structurally alter. This customization capability makes aluminum landing craft truly “tailored to your needs.”

Commercial procurement must consider not only the purchase cost but also the resale value when disposing of the asset. Aluminum landing craft have a natural advantage in this regard. Aluminum alloy has extremely high recycling value; even after ten years of use, the hull material can still enter the recycling system as raw material for recycled aluminum, with a residual value reaching 40% to 50% of the original hull material cost. A client operating a fleet in Southeast Asia told us that when renewing his fleet, he found that an aluminum landing craft with eight years of service could still fetch a resale price of about 60% of a new vessel’s value. In contrast, steel vessels suffer significant depreciation in resale value due to corrosion, while fiberglass vessels have virtually no recycling value and may even incur dismantling costs during disposal. This characteristic makes the full lifecycle asset value of aluminum landing craft far more substantial.

Data speaks volumes. Currently, aluminum alloy materials account for over 80% of new commercial landing craft worldwide. From resort logistics fleets in the Maldives to salmon farming support vessels in Norwegian fjords, and passenger-cargo hybrid vessels plying the waters between Southeast Asian islands, aluminum landing craft are found across the globe. These shipowners’ choices are no coincidence—through long-term operation, they have verified the comprehensive advantages of marine-grade aluminum in terms of durability, cost-effectiveness, and reliability. Among our clients, many have switched their entire fleets to aluminum alloy after using their first aluminum landing craft. As one Australian client put it bluntly: “Once you’ve used an aluminum boat, you’ll never want to touch a steel one again.”