Marine
Aluminum's use in marine applications can increase the speed and size
of boats, yachts, ferries, and ships, while improving their fuel
economy, seaworthiness, safety, reliability, maintenance costs.
Substitution of aluminum for steel can result in weight savings of
35 percent to 45 percent in hulls and
55 percent to 65 percent in superstructures. Higher
vessel speeds and load capacities can mean extra traffic volume and
profit for a ship or boat operator.
Used in the marine industry for more than 100 years, aluminum
combines light weight and ease of fabrication with corrosion and fatigue
resistance. Aluminum 's unique characteristics allow vessel volume and
height to be increased without loss of stability. Passenger compartments
can be larger and more cabins can be located above sea level. Cruise
ships gain increased manoeuverability and access to shallow draft ports
through the use of aluminum.
Fast ferries, a growing marine application for aluminum, each have
the ability to handle up to 1,500 passengers and 375 cars and travel at
speeds of 30-50 knots. In many cases, integrally stiffened and
mechanically interlocked extrusions are used for decks, roofing and
other structures with conventional welded extrusions and sheet used for
hulls and framing.
Aluminum-intensive cargo ships with load capacities up to 3,000
metric tons are under design to operate at up to 60 knots, cross the
Atlantic in under 60 hours, and handle Class 6 seas. Military
requirements seek smaller, more agile vessel designs with a lower radar
cross section and capable of 60 to 80 knots or more - another excellent
fit for aluminum given aluminum manufacturing advances, such as
friction-stir welding and structural bonding.
Aluminum is recognized by and complies with the requirements of the
High Speed Code of the International Maritime Organization, for vessel
design, safety, and control of fire risk. The metal stands up to the
torsional, flexural, compression and impact loads of high speed water
travel as well or better than steel.
Related Documents
Offshore
Aluminum at SEA -Speed, Endurance,Affordability
Aluminum Boats