designs inspired by tradition
We found these two ‘ancient’ devices used by the craftsmen for their boat building business, totally beautiful and immediately legible in terms of their functionality and sheer simplicity. They found their way into the project quite easily and now rests amongst many of the decorative items on display within the premises.
Our on site presence was useful in demarcating the exacting shape and proportion to the fins [ribs] to be installed as partitions for the restaurant, it is easily decided once the information becomes ready for replication and construction. The template served as a guide for the manufacture of several of these ribs and they were rapidly constructed on premises to shape the various private rooms of the restaurant.
This photo shows Ms Zeidler’s on-site activity aligning the final touches to the ribs for the duyong restaurant.
In sailboats, keels use the forward motion of the boat to generate lift to counter the lateral force from the sails. Sailboats have much larger keels than non sailing hulls. Keels are different from centerboards and other types of foils in that keels are made of heavy materials to provide ballast to stabilize the boat. Keels may be fixed, or non-moveable, or they may retract to allow sailing in shallower waters. Retracting keels may pivot (a swing keel) or slide upwards to retract, and are usually retracted with a winch due to the ballast. Since the keel provides far more stability when lowered than when retracted (due to the greater moment arm involved) the amount of sail carried is generally reduced when sailing with the keel is retracted.
There are several types of fixed keels including: full keels, fin keels, winged keels, bulb keels, and twin keels or bilge keels among other designs.
Non-fixed keels are known as canting keels or Swing keels. These are found on racing yachts such as those competing in the Volvo Ocean Race. They provide much more righting moment for a lot less weight, as the keel moves out to the windward-side of the boat. The perpendicular distance from weight to pivot is increased, therefore a larger righting moment is produced.
notes from wikipedia.org
