the block shape...
Broadside! Any long floating
thing will be pushed side-on by continuous wave action. In
this example, a 2m (6ft) model of Noah's Ark broaches within
seconds and remains broadside to the waves. The 4-8 knot
wind is unable to turn so it is effectively caught in a beam sea.
...with a ship shape
A ship-shaped hull does the same, unless
there is some way to keep it aligned with the wave
Following Sea. The
safest and most comfortable ride is when the Ark is end-on
to the waves.
There are various ways to achieve this control, such as drag
inducing features or a sea anchor, but the most
effective unmanned method appears to be something that
catches the wind at the bow, in conjunction with deliberate
hull arrangements such as skeg and trim to stern. The design
of the bow "wind catcher" might take many forms -
from a modern looking forecastle to an ancient looking
extended stem. Preferably in wood, not canvas - to be
Note: At reduced scale, the ratio
between wind forces and wave loads can change, so the model
could be showing steering features at a distorted scale.
NOTE: If you have XP SP2, you
need to "Allow blocked Content" to run the web navigation.
9. Mar 2005
8. Dec 2004
7. Nov 2004
6. Oct 2004
5. Aug 2004
4. July 2004
3. June 2004