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Posts Tagged Sailing instrument systems

Trim Steer Functions

The Ockam system trim steer functions are used by helmsmen and sail trimmers to provide feedback for optimizing performance. True wind angle is useful for helming, orienting the boat relative to the true wind. It is especially valuable downwind where the human sensor system has less input.

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Tactical Functions

The Ockam system tactical functions provide information that aid correct decisions about where you are and what’s going on with wind and current. Time to the Laylines Overstanding is a sin in racing. “Understanding” is a deadly sin. Many sailors have achieved guru status by consistently and

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Statistics Functions

The Ockam system statistics functions are designed to help in decisions involving laylines, Vmc sailing and sail selection. On numeric displays, the six parameters displayed in round-robin order. On OS5, these functions are displayed on the Race page. Function Example Description Wind direction Mt:224 The average wind

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Performance Functions

The Ockam system performance functions provide the information you need to get the most out of your boat. Boatspeed is the most fundamental input to the Ockam system, and is the first thing the crew looks at when trying to make the boat go faster. It is

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Wind Functions

True Wind is the sailboat’s fuel supply. Of all the functions that an instrument system produces, wind functions are the most important for performance, tactics and strategy during racing. Wind Direction is the magnetic bearing of the true wind. It lets you to keep tabs on where

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Measuring Wind Direction: What is Upwash?

Measuring Wind Direction: What is Upwash?

Here’s a term that is bandied about in measuring Wind Direction, but is commonly misunderstood: upwash. Many people think they understand what it is, but are wrong by 90 degrees. What do I mean by that? Most people hear the term upwash and take it for face

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Twelve Meter Yachts

Twelve Meter Yachts

Twelve Meter Yachts and their Sailing Instruments All through the 1980’s the America’s Cup was contested in Twelve Meter Yachts, and significant advances were being made in hull construction, sailcloth and panel layout, and in Sailing Instruments Systems.  But, perhaps more than the others advances, Sailing Instruments were

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Measuring Wind, and Understanding Wind Shear

Measuring Wind, and Understanding Wind Shear

Understanding wind shear and gradient Wind shear… it’s that mysterious quality of the wind that can make or break your strategy in a race. Many people measuring wind refuse to believe in the existence of wind shear, never mind its effects on sail trim. Much has been

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Tag List

Tag List If you are here, you are a true geek. This page shows the identifying characters used by the Ockam bus to define what the data refers to. Function Char hex dec 005 card Interfaces 1=Vs 2=Va 3=Ms,3a=3d 4=GPS 5=Polar Notes[1] separate items on 007, alternating

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Internet Access from the Rail

This is an early paper by Dan about onboard ethernet. I’ve taken the liberty of including it in his blog. Dick McCurdy Introduction Knowledge and planning have always been key factors in all forms of sailing, from the Polynesian catamarans to Nelson’s victory at the Battle of

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