Module 5 prepares you for the shotgun of jargon that will be delivered in module 7.

Ac75 vmg. To help me learn I bought and fitted a VMG digital instrument which was an interesting and helped me get a feel for the best groove upwind. Have a look at the polars above for the details and heres a look at an early Botin concept drawing of what the AC75 might look like. Bear in mind however this angle may vary within a few degrees depending on sea state.

Module 6 introduces technologies such as AIS RADAR and Weather GRIBS and electronic chart overlays. How to Find Your Best Downwind VMG Angle. The AC75 design rule is a so-called box rule which sets some key parameters such as hull length and overall length with bowsprit 75ft hence the name AC75.

We define velocity made good on course and velocity made good upwind. Now the view seems to be accepted that the hull is just an endplate between the rig and the water - which explains the unusual for a regular monohull yacht design treatments of the deck and cockpit design of which Emirates Team New Zealand is probably the most extreme example. The 23 m 75 ft monohulls featured wing-like sailing hydrofoils mounted under the hull a soft wingsail and no keel.

Anyone know what is going on with VMG in the AC75 series. Given the upwind VMG is about 15kts - you can work out how that translates into boat speed. Admin February 3 2018.

When the AC75s first appeared back in September 2019 the fan focus was all on hull shape. The cocktail is new surprising a. Upwind these AC75s are hitting 30 knots in 12 knots of wind.

Good comparison of how the boats stack up. ON THE FIRST TRY for the ac75 compared to years of experience for slingers on the 50s. Take the optimum mode or VMG.