What is a tumblehome hull design?
Tumblehome is a term describing a hull which grows narrower above the waterline than its beam. A small amount of tumblehome is normal in many naval architecture designs in order to allow any small projections at deck level to clear wharves.
Where is the tumblehome on a ship?
In ship designing, the tumblehome is the narrowing of a ship’s hull with greater distance above the water-line. Expressed more technically, it is present when the beam at the uppermost deck is less than the maximum beam of the vessel.
What are the advantages of tumblehome?
One of the advantages of tumblehome is that the center of gravity is lower than in a design where the maximum beam is at the deck. This, of course, is assuming the depths are similar. Tumblehome also has a more even stability curve.
What is topside flare?
Flare is the angle at which a ship’s hull plate or planking departs from the vertical in an outward direction with increasing height. A flared hull typically has a deck area larger than its cross-sectional area at the waterline.
What is sheer on a boat?
Sheer. Boats are often defined by their sheer line, which is the transition of the gunwale from the transom to the bow. Most boats have a graceful sheer that rises from the stern of the boat to the bow.
What is Strake in ship?
On a vessel’s hull, a strake is a longitudinal course of planking or plating which runs from the boat’s stempost (at the bows) to the sternpost or transom (at the rear). The word derives from traditional wooden boat building methods, used in both carvel and clinker construction.
What is the origin of the word Tumblehome?
Origin of tumblehome From tumble to slope inward (obsolete)
What is Tumblehome on a canoe?
Tumblehome is when the gunnel width is less than the overall width of the canoe. You can see that by looking down the side, and see that the widest point is just below the gunnel, and it actually tucks in towards the gunnel, towards the top.
What is a flared bow?
marine. The spreading out of the forebody form from the central vertical plane with increasing rapidity as it rises from the waterline to the rail. Ships with an excessive bow flare are exposed to much higher sea loads than previously expected.
What is rake in ship?
The rake of a ship’s prow is the angle at which the prow rises from the water (the rake below water being called the bow rake). In machining the rake angle is the angle from the cutting head to the object being worked on.