its called a keel boat ok
Keel boats were and are used for transporting cargo, mainly inshore and on navigable rivers. They are powered barges in effect.
There's no single right answer that will cover any 20' sloop, the size and shape of the keel the form of the hull and how the sails are ballanced will all affect what size rudder is needed, as well as the shape of it. Also the answer will depend on what handling characteristics are desired. As for just the depth of the rudder, usually it will go to slightly less depth than the keel when the keel is at it's deepest. Some lifting keel yachts, especially smaller ones, also have a lifting rudder.
Mike Phinck - also spelt - Mike Fink
In boats and ships, keel can refer to either of two parts: a structural element, or a hydrodynamic element. These parts overlap. As the laying down of the keel is the initial step in construction of a ship, in British and American shipbuilding traditions the construction is dated from this event. Only the ship's launching is considered more significant in its creation.
Every boat has either a keel, a centerboard or a dagger board depending on the boat. A keel is usually on a bigger boat and it is part of the ship. It sticks a certain length below the ship into the water to stabilize the boat. A keel is fixed. A center board is the same except when not in the water it retracts itself into the hull of the boat and is usually used in a medium sized boat. A dagger board is manually removed from the boat and is used on the smallest boats.
Edurne Keel's birth name is Edurne Echeverra Keel.
Howard Keel's birth name is Harold Clifford Keel.
Kaija Keel's birth name is Kaija Liane Keel.
Kirstine Keel's birth name is Kirstine Elizabeth Keel.
Leslie Keel's birth name is Leslie Grace Keel.
Ron Keel's birth name is Rynia Lee Keel Jr..
Two manufacturers of this type of boats are: Hake Yachts, 4550 SE Hampton Court, Stuart FL 34997 * (772) 287-3200 http://www.seawardyachts.com/ and ﻿Northshore Shipyard, Chichester Harbour U.K. http://www.northshore.co.uk
Can you keel down
It is the inclination of a keel perpendicular to waterline.
Anna Keel has written: 'I personaggi di Anna Keel'
The largest "swing" keel "production" yacht (ie. keel pivots/rotates into hull) is probably the Northshore Southerly 54rs. They have only just started construction, so if this does not count, then the next model down the 46rs is probably the biggest. Draught varies between 7 foot, to less than 3 foot with the keel up on the 46rs and it can be beached. In terms of "custom" designed yachts, the Bill Dixon Yacht Design Company have made a 100 foot yacht with a swing keel named Liara II (Liara II actually has a tubular keel, meaning the lower half of the keel with the bulb is lifted into the out keel casing. It works in the same way a telescope does. But large yachts can accommodate swing keels). Coincidently, Bill Dixon designed the (hull) Southerly 46rs as mentioned above. As for yachts with "lifting" keels (ie. keel moves vertically upwards) the biggest production may be the Hanse 630e which as the name suggest is 63 foot in lenght. Marten also producte a lifting keel yacht I belive. Wally have adjustable boards, as do products of many of the larger builders but it could be argued that these are custom, rather than production models as they all vary. As for custom yachts, adjsutable boards are fairly common, the biggest may be Mirabella V, her draught can vary between 32 feet and 13 feet. Mirabella V is 247 foot in lenght and set numerous records upon completion of construction in terms of size, sail area, mast height ect. The Southerly 57 is on the water at Southampton Boat Show and there is a 65 on the way.
The Viking long boat had a shallow keel, so allowing the boat to be sailed or rowed up shallow rivers.
The keel provides stability AND steerage.
keel refers to as two parts of a ship
The Golden Keel was created in 1963.
Walker Keel was created in 1988.
Keel - band - was created in 1984.