Comparative Trend-Line Analysis » HUGHES 71' TRI Trend-Line Analysis

Release Date: 6/24/2007

HUGHES 71TRI MDI-Comparative Trend-Line Analysis

MDI Custom MultihullAnalysis of theHughes 71. For Trimarans this involves Performance and Stability results. We have graphed theHughes 71against6 Database Trend lines ofthe 89Trimarans in our Database. These Trend lines are: Bruce Number (BN), Sail Area to Displacement ratio (SA/D), Base Speed (BSpd), Texel Rating (TR), Stability Speed (SSpd) and Stability Index (SI-CM).

MDI ComparativeTrend-Line Analysis

Hughes 71TRI

design:Kurt Hughes

Basic Specifications:

Loa 70.90ft 21.61 m

Lwl70.00ft 21.34 m

Boa58.80ft 17.92 m

Bcl52.50ft 16 m

Bh8.11ft 2.47 m

Bcl/Lwl .38

Lwl/Bh 8.63

Disp.19.954LT

44696.96 lbs

20274.20 kg

SA 1822 sqft 169.27 m2

Performance Indicators:

SA/D 23.15

BN 1.21

BSpd 13.31

PI-C .84

Texel 107

Stability Indicators:

SI-CM7.06

SSpd28.38 Kts




















Graphics by Mr. Kurt Hughes

Kurt Hughes Sailing Designs


Trend Lines

MDI reports comparison data with other vessels selected by Cal Markwood. The comparisons are offered in two ways. In Cal's Evals Mr. Markwood gives related LWL vessel AVERAGES. On the graphs below we use TREND LINES of the entire Type Database, i.e. Catarmaran or Trimaran as appropriate.

While the Trend lines are accurate, the sailboat location on the graphs may not be exact. The graphs are intended as a quick reference for the reader to establish at a glance where the above vessel is located on the "Type Trend" line. Actual data used in locating the vessel on each Trend line is listed above. It may be used by the reader to evaluate the precise and exact location of this vessel on the graph.

Below you will find the6 graphs with Type Trend Lines. These Trend Lines are not averages or means, but rather are statistical evaluations that give the"apparent relationship" of theHughes 71 TRIwith the89Trimarans in the Database. The sailboats on the graphs represent theHughes 71 TRI. For a more indepth understanding of these graphs and their results please read the Technical pages

  • Kurt Hughes Sailing Designs