Most normal sailors have a pretty good idea of the area affected by the wind shadow of a normal boat sailing ahead? But how does it look like for...
Can anybody indicate who sells knot meters like the one in the photo or cost effective alternatives?
It appears that the modern trend in hull design is to go for wider sterns generally including chines. Given that nobody would look favourably...
The attached is taken from from the book "Principles of Yacht Design" and describes the variation of sail lift and drag as well as hull drag in...
A friend of mine who is in the process of purchasing a new boat is considering opting for Vinylester instead of Polyester resin in the...
hi, The boat I race on is a 37 footer sporting a 9/10 rig. It has 2 sets of aft angled spreaders with standard fixed shrouds and inners and 1...
HI, last year I replaced my trusty old 2 stroke engine with a 4 stroke Mercury 6HP. As I was taking it out of the car for its first sea test...
Hi, I am trying to understand the workings of a VPP software graciously provided for free in excel format by Paul Kotzebue in this link:...
I use a 6Hp Mercury engine on my sailing boat mainly to get me out into the open sea. The manual tells you that when not in use the engine...
I am looking to replace my trusty old 2 stroke Yamaha which got stolen with a new 6 to 8 HP outboard. This is used as an auxiliary engine for my...
considering the effect IRC has on race results I am intrigued on how little this topic is discussed on this forum. My interest was piqued when...
Hi, First of all by broaching i mean the tendency of a normally balanced boat to turn abruptly into the wind when a gust hits going upwind....
Recently I was given a mast head unit consisting of a wind direction indicator and a wind speed sensor. Due to the need to take into account...
I am thinking of buying a 47 foot boat which has extensive damage to its sub frame abkter going aground. The main issue is seperation between sub...
How does one repair a holed wooden hull, constructed of 2 layers 4mm plywood double diagonal? regards
Hi, I have a photo of the cut plywood panels of a small stitch and glue boat taken at an angle of about 45^ to the floor. It is fairly easy...
Hi, I guess it is because I can only manage about 50` to the wind in my small catamaran, but I am obsessed with trying to understand why other...
Hi, I own a 7.5m cat which has about 30 sq m of upwind sail area.It has 2 daggerboards each 1300mm deep and 500 mm span. The daggerbox has a...