Glossary entry (derived from question below)
English term or phrase:
deadrise
Spanish translation:
ángulo de pantoque
English term
deadrise
There are, however, many good reasons for choosing a V bottom hull over a flat one. Someone experienced in observing these wave patterns might infer the angle of deadrise just from looking at the waves generated by the boat. (bluejacketboats.com)
A higher deadrise angle will give better performance in rough waters, but a lower deadrise angle is more hydrodynamically efficient and thus can generate better acceleration and a faster top speed. (Jelsoft Enterprises Ltd.)
This transducer’s unique design allows it to be mounted close to the vessel’s centerline without drilling holes, and is able to correct for the hull’s deadrise angle. (Airmar Technology Corporation)
| 4 +2 | ángulo de pantoque |
Peter Guest
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| 5 | Astilla muerta |
MNoriega
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| 4 -1 | Puntal |
José Antonio Rodríguez Martín
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Proposed translations
Spain
33 yrs Ships, Engineering Marketing
Native in: English 
Works in: Catalan to English, Spanish to English, English to Spanish
ángulo de pantoque
k= 1,0 respecto de un buque de pantoque redondo que no tenga quillas de balance ni quilla de barra; k =0,7 respecto de un buque de pantoque quebrado; (Normativa Marítima)
| agree |
Indiana
2 days 22 hrs
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| agree |
Emma Ratcliffe
: I think yours is the best explanation, because there is no exact wording in spanish to describe it.
2 days 22 hrs
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Passion for quality!
Native in: Spanish
Works in: English to Spanish, Spanish to English
Puntal
Puntal del buque: Es la medida vertical desde el canto superior de la quilla hasta la unión de la traca de cinta con la cubierta principal. (Wikipedia)
| disagree |
Peter Guest
: deadrise is only to the height to the end of the curve of the bilge. Puntal is depth
1 hr
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Astilla muerta
Guadalupeko Nº de Construcción 131. Se trata de una embarcación para pesca local con artes menores con propulsión a motor y formas de semidesplazamiento, con una buena astilla muerta, proa lanzada y popa de estampa. (Astillero Herso)
Sedan Bridge La majestuosa potencia de este magnífico 58 Sedan Bridge sobrepasa a cualquier otro yate de su clase. Los impresionantes motores gemelos diesel MAN V8 y una excepcional capacidad de combustible hacen que este musculoso yate sea capaz de llevarle allí donde su corazón lo desea. Para garantizarle una navegación fluida y estable, hemos construido este bello yate con una manga excepcionalmente ancha y una astilla muerta más abrupta, hemos añadido un propulsor de proa y hemos incluido aire acondicionado estándar en el puente. (International Searay)
Cascos monohédricos Los cascos monohédricos típicos ('monohedron hulls' en inglés), presentan el codillo paralelo a la línea de quilla (o al alefriz, si hubiese quillote), mas o menos a partir de la mitad de la embarcación hacia popa, creando así un ángulo de astilla muerta (o “V”) constante en esta zona del casco. (Gestenaval, Ing. y Consultoría Naval)
Discussion
The amount of V shape in the bottom of a hull is known as deadrise. Technically, deadrise is an angle measured upward from a horizontal plane at keel level. If you stand in front of or behind a hard-chined boat and look along the hull, you will be able to judge the amount of deadrise.A flat-bottomed boat has a dead-rise angle of 0 degrees; a deep-V hull has about 24 degrees of deadrise. The amount of deadrise varies with the intended use of the boat. A flat-bottomed boat rises onto a plane quickly and provides a comfortable, stable ride in calm water—but it will pound heavily in rough water. A deep-V hull provides a softer ride in those conditions, but will be more reluctant to rise onto a plane. An all-purpose hull—a common compromise—has a dead-rise angle of about 15 degrees.