#491 IMS 43
study was conducted in part by analyzing a set of hull variations
with the SPLASH free-surface CFD code by South Bay Simulations
(see image below) to complement knowledge already contained
in our existing VPP. To choose the best solution from many
hull variations, we interpret the SPLASH results with our
extensive experience and play them against our own VPP formulations.
Farr Yacht Design we continuously improve the foil designs
incorporated into the appendages. These boats will sport our
latest foil designs produced in-house using advanced CFD tools.
Reproducing the design foil shape is critical to the performance
of the boat so the keel and rudder surfaces were machined
using Pro/Engineer 3D models supplied directly to the builder.
major victories of the 2001 season were split between overlapping
and non-overlapping headsail rig configurations. The choice
of rig configuration is dependent on the expected wind and
sea conditions and level of flexibility desired. Design 491
will feature overlapping headsails to meet the owner’s
requirements for the best performance over a wide range of
most noticeable characteristic of the deck layout on Design
491 is the tiller (though a twin wheel option is available).
The combination of high freeboard and low coachroof provide
the best windage solution and working platform for this sized
boat. Every detail of the deck and interior is designed to
function efficiently using the least amount of weight while
meeting the requirements of the IMS rule.