A bulb keel outside the ballast or an internal one?

She has a conventional fixed bulb keel and was launched in mid-2008.

This feature makes these winged keels also another type of bulb keel.

It has the same bulb keel and a mast and rudder made of carbon fiber.

Oracle's boat features an unusual bulb keel, with a sharp edge in front and winglets placed far towards the back.

The design was a precursor to the modern bulb keel, a strut built with a weighted bulb at the bottom.

Fin and bulb keel.

A bulb keel is a keel, usually made with a high aspect ratio foil, that contains a ballast-filled bulb at the bottom, usually teardrop shaped.

The purpose of the bulb keel is to place the ballast as low as possible, therefore gaining the maximum possible amount of leverage and thus the most righting moment.

Skneereeech-- Howling, the cutter scrolled off to the right, leaving the bulb keel of the Klingon to slug around stumpily after them, and open space to spew out between.

There are many types of fixed keels, including full keels, long keels, fin keels, winged keels, bulb keels, and bilge keels among other designs.

Since bulb keels work best on long, thin keels or daggerboards, they are generally not used on sailboats intended for shallow waters, but are most often found on offshore racing craft.

A very able small boat ballasted with a modified bulb keel, it stands up well to strong winds, is still regarded as one of the best boats in its size range, and is a properly trailerable craft.

Racing yachts try to reduce the wetted surface area, which creates drag, by keeping the hull light whilst having a deep and heavy bulb keel, allowing them to support a tall mast with a great sail area.

Daggerboards built like bulb keels are often referred to as "lifting keels", and they can be retracted into the boat to reduce the draft, and to allow the boat to be loaded onto a trailer.

Unencumbered by rating rules, the Swan 55 has a voluminous hull, shallow draft and sufficient sheer and freeboard for dry and comfortable cruising, yet her modern bulb keel, fast Frers' underbody and large sail area ensure unparalleled performance.

Last year, however, Michael Fay forced the San Diego Yacht Club to accept his challenge in New Zealand, which from the bottom of its bulbed keel to the top of its 150-foot mast would barely fit under the roof of the Astrodome.