I have not found freeship very useful because I can't draw.I have had difficulty with the tutorial I found on the net. This time I kept trying...
I don't Know if this is posted in the right place. A friend of mine is looking to buy a boat to go fishing on the estuary. As to buying the boats...
I could find no info on how to design twin keels so I decided to invent my own method. My design purpose is to decide what size and shape they...
A boat weighs the sum total of all of its component. But as I can only guess some of them my boat estimates cannot be to accurate. I have tried to...
Just read an article on curing the bad smell marine toilets produce. the cure was to put the toilet in the wheelhouse where it was well...
I am aware Dave Gerr no longer contributes to this site, a great pity. The Nature of Boats is my favorite.In boat strength there seems to be a...
If you can do tech drawing (I can't) you draw your ship calculate its weight and you will know where the lwl will be. You could draw a boat do all...
I have long been obsessed with accuracy in maths. Applying maths to power prediction and you come up with Wymans formula, Gerr's formula and...
I understand the need for Zink sacrificial anodes even on a wooden boat. What I don't understand is that a steel boat can be protected by spraying...
For a WW2 wargame. Sonar pings out to about 2500yds and is directional. Hy drophones can listen out to about 40-50 miles. Is a hydrophone...
I used Dave Gerr's Prop book to predict the required prop for Molakai Straight as a test and practice for the design I am working on. I Picked MS...
On holiday I crossed the channel in a ferryboat. The captain said the weather was force 8 but not to worry the boat was fully stabilized. I was...
I have learned a lot from this forum and Dave Gerrs books. I started with a WW2 harbour defense launch as my chosen vehicle to cross the Atlantic....
As I sit reading this book at my computer I am compelled to stop due to the fact that I am suffering information overload. I hesitated to buy...
Understanding boat design by George Brewer uses sail area/displacement ratio in his design portfolio. A boat with a ratio of 12 would probably be...
When I first joined this forum I was a bit obsessed with power calculations. I have become much more learned since then. I have come across many...
Could someone please explain why you would choose a lug sail rather than say a marconi rig. Dingies as far as I know usually use a marconi rig....
I have been looking at the possibility of a conceptual design for a cat boat capable of an Atlantic crossing. The idea is sort of motor sailor...
Ok Grimalkin capsized during a fastnet race, that by itself does not make it a bad design. After that disaster the capsize number formula...
Dave Gers Book "Boat strength" has strip planked boats with frames and Hardchine boats with stringers. there is a bit in the book which seems to...