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The
ORC VPP (Velocity
Prediction Program) is the core of the ORC International and
ORC Club Rating
Systems. The software is accompanied by the ORC Manager
program that includes an IMS Editor program for entering and editing
measurement data as will as an Offset Toolbox for editing hull
offset files. Input data in DXT and OFF file formats can then be
used to produce hydrostatics data and polar diagrams that predict
boat speed for wind conditions over 6 – 20 knots of true wind speed
at the following true wind angles: optimum beat, 52, 60, 75, 90,
110, 120, 135, 150 degrees and optimum run.
The ORC VPP Designer's version (DVP) uses the same software used by
Rating officers to issue certificates, with the only limitation
being able to print actual certificates. However, the results data
includes all the ratings and time allowances shown on certificate,
together with a complete set of calculated hydro and aerodynamic
data and that defined by the ORC rules.
The ORC DVP can produce reports such as the
Speed Guide that include polar diagrams as well as
theoretical speeds for various wind conditions and every possible
sail combination. The ORC DVP is Windows based software, easy to
use, with a user-friendly interface and standard Windows functions.
Any designer may process design data through the VPP to analyze
rating effects, and the software is therefore regarded as essential
to anyone contemplating an ORC design project. The subscription will
not give access to existing hull data without the written permission
of its designer, while rig, sails and other measurements can be
obtained from any copy of ORC Certificate through ORC Sailor
Services.
The
ORC VPP Documentation describes the methodology of the
equations used to calculate the forces produced by the hull,
appendages, and sails, and how these are combined in the VPP. This
is updated annually by the International Technical Committee (ITC).
The annual subscription to the ORC DVP is
480 EUR (400 EUR + VAT). Once a request is submitted, an invoice will be created and sent to the
registered e-mail address. The fee can be paid by bank transfer or
using any major credit card. Upon receipt of your payment, new
subscribers will receive credentials to log on to the
DVP Subscribers web
page, while credentials of existing subscribers will be
renewed. From this DVP page you can download the installation
software package and regularly check for updates for one year of
both the VPP core and the editing and management interfaces.
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