I am wondering what type of speed the H-260 can get up to. I was sailing in a 20kts of wind and noticed that my Bi-Data instrument indicated about 5kts of speed but my GPS indicated close to 10kts. Which do you think was correct? Can a H-260 post 10-12 kts of speed?
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Maybe both
Your GPS measures speed over bottom, while your knot meter measures speed through the water. Both of these are effected by current ect. Example if your are sailing with a 2 knot current your GPS may read 6 knots. Your speed through the water is actualy only 4 knots, but you are making the extra 2 knots over the bottom due to the favorable current.
Your GPS measures speed over bottom, while your knot meter measures speed through the water. Both of these are effected by current ect. Example if your are sailing with a 2 knot current your GPS may read 6 knots. Your speed through the water is actualy only 4 knots, but you are making the extra 2 knots over the bottom due to the favorable current.
Wouldn't think so.
That's a tough call, were you reefed at those wind speeds? This last saturday, in 12kt winds we were flying along at 6kts with a peak of 6.8kts for about 5 mins. It was a great ride. Have you calibrated you bidata? Any tides or river flows that could affect your GPS speed vs bidata? Jim S/V Java
That's a tough call, were you reefed at those wind speeds? This last saturday, in 12kt winds we were flying along at 6kts with a peak of 6.8kts for about 5 mins. It was a great ride. Have you calibrated you bidata? Any tides or river flows that could affect your GPS speed vs bidata? Jim S/V Java
Hull Speed
I'm no expert, but my understanding is that hull speed (mainly a function of waterline length) is the upper limit for a non-planing hull. The 260 has a hull speed of 6 1/2 knots; anything much above that could be due to favorable current, or surfing big waves. I'd love to be wrong; 10 knots sounds great!
I'm no expert, but my understanding is that hull speed (mainly a function of waterline length) is the upper limit for a non-planing hull. The 260 has a hull speed of 6 1/2 knots; anything much above that could be due to favorable current, or surfing big waves. I'd love to be wrong; 10 knots sounds great!
The hull speed on a 95 H26 is about...
6.7 kts I think. This is from the Hunter manual. We have seen 6 to 6.5 on many occasions but the 7's only come when surfing. This was supported by both onboard instruments and GPS. Ray s/v Speedy. PS. Saturday while on a run in 25 mph winds with gusts to 35mph with my owner installed 3d reef we hit, and ran at 5.4 to 6.3 kts.
6.7 kts I think. This is from the Hunter manual. We have seen 6 to 6.5 on many occasions but the 7's only come when surfing. This was supported by both onboard instruments and GPS. Ray s/v Speedy. PS. Saturday while on a run in 25 mph winds with gusts to 35mph with my owner installed 3d reef we hit, and ran at 5.4 to 6.3 kts.
GPS
I believe most GPS's are more accurate in measuring speed than the Bidata. I have both and it's interesting how often they differ. Make sure you have your GPS set to knots. Hull speed of the boat may be about 6.5kts but I had my H26 at over 8 on a broad reach for several minutes once. What a ride. Ron Mehringer s/v Hydro-Therapy
I believe most GPS's are more accurate in measuring speed than the Bidata. I have both and it's interesting how often they differ. Make sure you have your GPS set to knots. Hull speed of the boat may be about 6.5kts but I had my H26 at over 8 on a broad reach for several minutes once. What a ride. Ron Mehringer s/v Hydro-Therapy
Its All Physics
In a displacement hull, the maximum hull speed is 1.2 times the square root of the length of the water line. At the maximum hull speed, the bow wave meets the stern wave and you can go no faster, no matter what the wind. The exception is when you are able to surf. At that point, you are no longer "displacing" water. The theoretical hull speed of a H26 is 6.4 knots. I have had my GPS tell me 10 knots too, but I was riding a 5 knot current. Hope this helps. Ned Christensen "Second Wind"
In a displacement hull, the maximum hull speed is 1.2 times the square root of the length of the water line. At the maximum hull speed, the bow wave meets the stern wave and you can go no faster, no matter what the wind. The exception is when you are able to surf. At that point, you are no longer "displacing" water. The theoretical hull speed of a H26 is 6.4 knots. I have had my GPS tell me 10 knots too, but I was riding a 5 knot current. Hope this helps. Ned Christensen "Second Wind"
We made 7.5 knots
Surfing, no current, we made 7.5 knots. Main was reefed, furling was half out. Wind was about 20 mph
Surfing, no current, we made 7.5 knots. Main was reefed, furling was half out. Wind was about 20 mph
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