Vela Elegir barco NUEVA construcción

[caribdis]

Tengo un zumbido como de lenguaje de vendedor alrededor de mis oídos..

Me parece tendencioso decir que la proporción de lastre de los modelos estandar van del 25 al 30%.

Los hay, pero los datos no van de 25 a 30.

No quiero dar yo los datos, esto dicen en Yachting Monthly:


2 The Ballast ratio
The ballast ratio is the percentage of the boat’s weight that is ballast. For example, a boat that displaces 13,608kg (30,000 lb) with a 4,536kg (10,000lb) ballast keel has 33% ballast ratio. If we add a 1,360kg (3,000 lb) coastal cruiser payload to the boat, the gross displacement is now 14,968kg (33,000 lb) and the ballast ratio drops to 30%. The lighter the boat, the greater the impact of payload.
Think of the ballast ratio as a measure of ‘stiffness’ – the resistance to heeling. It’s relevant to short-handed sailing because unlike racing boats, we don’t have five fatties on the rail to increase righting moment when sailing upwind. However, equally important are the ballast’s draught, shape and composition – a boat with a lead bulb on a cast iron fin will be much stiffer than a lead fin keel of identical weight.

There’s also ‘form stability.’ A catamaran, for example, has no ballast but very high form stability thanks to its beam, and the principle also applies to beamy coastal cruisers. Ballast ratio is a rather crude indicator but has its uses.

The J-105 again. She has a high ballast ratio, so she’s stiff and performs very well upwind

High performance monohulls may have a ballast ratio approaching 50%. A J-105, for example, has a light ship weight of 3,515kg (7,750 lb), with 1,542kg (3,400 lb) of ballast, for a ballast ratio of 44%. Traditionally, offshore boats have had a ballast ratio of 30-40%. The trend in recent years has been to push more volume into boats, which increases the beam. This, in turn, increases the form stability, reducing the need for ballast to maintain stiffness.
Despite a low ballast ratio, the Bavaria 40’s prodigious beam gives her form stability

It’s now not uncommon to see ballast ratios below 30%. A Bavaria 40, for example, has a light ship weight of 8,680kg (19,136 lb), with 2,736kg (6,032 lb) of ballast, for a nominal ballast ratio of 31.5%. With a 1,360kg (3,000 lb) coastal cruising payload, this drops to 27%. Despite this low figure, the Bavaria 40, with her extra beam and form stability, is a capable coastal cruiser. For offshore work, I like to have the loaded ballast ratio above 30% (this requires light ship ballast ratios above 35%, increasing to 40% on a weight-and-performance-conscious boat.

Read more at http://www.yachtingmonthly.com/yacht...C8vrbjPPXjo.99


Y el barco a mi me gusta, pero estamos en un foro, vamos a intentar hablar con propiedad..