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NavCad is a software tool for the prediction
and analysis of vessel speed and power performance. It also
provides for the selection of suitable propulsion system components
- engines, gears and propellers. Built from a very comprehensive
library of algorithms, NavCad can be used for the design and
analysis of virtually any type of monohull or catamaran - from large
displacement vessels to fast planing craft.
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Features |
Used by (over 400
worldwide) |
- Resistance prediction
- Steady-state propulsion analysis
- Vessel acceleration analysis
- Propulsion sizing
- Personal Developer Library
SDK
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- Naval architects and designers
- Ship and boat builders
- Propulsion equipment manufacturers
- Navies, coast guards & schools
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| Applications |
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- Ocean-going merchant and naval
vessels
- Small ships and work boats
- Motor and sailing yachts
- High-performance vehicles
- River barge trains
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- Conventional propellers (open and
ducted)
- Waterjets
- Special propellers (surface and
cycloidal)
- User-defined propulsor performance
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| Planned
for 2008 |
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- Calculation Toolbox - Certain
hydrodynamic characteristics are critical to the performance of
a vessel. These new calculations will help evaluate both
resistance parameters (e.g. separation at the transom) and
propulsion parameters (e.g. inception of tip vortex and
singing). A sea trial "wizard" tool is also planned to
define and evaluate sea trial performance.
- Job Tracker - A new project
management utility will allow you to track the time that NavCad
is used on your projects.
- Enhanced definition of hull
data - This new utility will help users define significant
hull parameters via longitudinal distributions. For example,
user entry of sectional areas is used to calculate a proper
effective transom area - critical for reliable resistance
prediction of semi-displacement hulls.
- Propeller lift forces - High-speed
planing craft are influenced by lift from the propeller. The
difficult calculation of the prediction of propeller lift force
due to shaft angle (for both planing and propulsion analysis) is
in development for 2008.
- Measures of propulsion merit
- A good designer always compares a design to industry-standard
measures of merit. New propulsion criteria are being added,
including "transport efficiency".
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| Added
in 2007 and 2006 |
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- Cavitation analysis - A new
proprietary prediction method for propellers in the
transcavitating mode was added to NavCad, and presented at the
WMTC2006 Conference in London.
- Effect of shaft angle -
High shaft angle can greatly affect a propeller's thrust and
torque. Avoid unexpected overload and peak cavitation surprises
with a new "inclined flow" algorithm.
- River barge train resistance
- A new supplemental calculation for the prediction of river
barge trains (flotillas, convoys) has been added.
- Blade scan analysis - Enter
local pitch and chord length at a few radii as measured from a
blade scanning device, and this utility will help you determine
the propeller's EAR and hydrodynamic mean pitch.
- Supplemental calculations -
Calculations are now available that are beyond the typical set
of resistance and propulsion analyses. The first of these
include the prediction of dynamic trim, vessel squat, and
synchronous pitching.
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| Product
brochure |
Click
here to view the NavCad product brochure with additional
details and specifications. [PDF format, 390KB]
Nueva
versión del software de resistencia y propulsión NavCad
- InfoMarine Enero 2004 [PDF format, 110KB]
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| Comparison
with PropExpert and SwiftCraft |
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Click
here to view a technical feature comparison of
HydroComp's speed & power design and analysis software.
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| Screenshots |

Main page |

Hull data |

Method Expert |

Propulsor library |

Propulsor data |

Reports |
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