Originally Posted by stevewrye
Beaching an aluminum centerboard
design is a design feature but was intended for the Britany coast and no water
at low tide. These boats primary design feature is how well they cruise
in open ocean. Most aluminum centerboard
boats have two coats of two part epoxy
as a barrier for bottom paint
. Putting it on the beach often could be expensive as the bottom paint
will scrape off when she makes contact with sand. That being said it is a nice option to have.
Brittany coast much the same as elsewhere. Sand. Mud and Muddy Sand (and lots of rocks! - big and small!).....the ablative nature of mud much the same as sand - and certainly the cummulative effect more so on a permanent tidal mud mooring
than from an occassional beaching on sand.
Biggest concern with a flat bottomed boat is not parking her accidently on a rock / stone (or car?!) hidden amongst the otherwise soft(ish) bottom......and in any event never wise to park a boat on an unknown (by sight!) bottom, even if you have a couple of keels (I have 3!) to avoid many things poking up through the bilge!
For beaching (on a beach) whatever the hull
type (or number!) want to avoid being on a shore in bad weather
/ rollers (surf?!) and having the boat pound up and down, either as she settles or lifts (Boat rises - sea recedes - boat comes down. hard bump
- same as dropping a boat a few inches (or a few feet!) from a hoist). Keels do punch through! and they also transmit loads into the structure that the boat was not designed for.