Quiero destacar esta web:
http://www.pilothouse-yachts.com/pages/the-pilothouse
En la que se dice:
A Pilothouse will protect you
Exposure to wind, rain, and cold will inevitably affect your crew and can lead to lethargy, seasickness, and poor decision-making. Spray just makes things even worse!
Excessive heat is debilitating, yet yachts rarely provide enough shade on deck. The great thing about a pilothouse is that you are protected from the elements.
What is a pilothouse yacht?
- The design and layout allow the crew to keep a safe and effective watch without having to be on deck
- There must be all-round visibility from within the yacht's accommodation - somewhere for a crew member to keep watch comfortably whilst fully protected from the elements
- Most pilothouse yachts have an inside steering position, but this isn’t essential provided it only takes a few seconds to reach the cockpit. You may find engine controls by the chart table together with an autopilot joystick instead of a wheel
- A wheelhouse is a pilothouse which contains the vessel’s main steering position
Pilot Saloon, Deck Saloon, Raised Saloon, PH, DS, DSC, RS - What do these mean?
Types of Pilothouse
Yacht builders describe their yachts in various ways and these terms all refer to pilothouse or deck saloon yachts. "Pilothouse", "Pilot House", "Pilot" or "PH" nearly always mean that you can keep an effective watch from within. A "Raised Saloon" is usually similar.
A "Deck Saloon" or "DS" yacht may look like a pilothouse yacht but often has a conventional deep saloon. You probably can’t see out without standing on tiptoe and watchkeeping may be impossible. What is really confusing is that several true pilothouse yachts are named "DS"!
We will certainly include a deck saloon yacht on this site but only if you can keep watch from inside.
Why you need a Pilothouse yacht!
The ideal pilothouse
Here are some features to aim for:
- 360° vision from a seated position
- Plenty of space for the crew including some off-watch. Plus a couch for catnapping!
- Fully equipped chart table separate from the dining area
- Ample ventilation even with the windows closed
- Windscreen wipers and an anti-mist blower
- Internal wheel and/or autopilot joystick together with engine controls
- Skylight for observing sails and also for ventilation
- Some screening for sun and privacy
- Unobstructed view forward from the cockpit
Todo lo que dice, define bastante bien el barco que busco.
Me ha parecido muy aclaratoria la diferenciacion que hace entre Pilothouse y DeckSalon.
Es curioso, que la definicion es la misma que aparece en la Wikipedia:
http://en.wikipedia.org/wiki/Pilothouse_yacht 
Y tambien es interesante la seccion de ventajas e inconvenientes
Advantages of Pilothouse Yachts
Safety
If a crewmember suffers from exposure you will end up shorthanded, and safety and efficiency may be compromised. A pilothouse should prevent this. Anyone prone to seasickness will appreciate being able to focus on the horizon from inside. In severe conditions, with the crew keeping watch from inside the pilothouse, a man overboard situation is less likely. The navigator can compare the chart with the real world outside without going on deck. The chart stays dry.
A Happy Crew
The crew will enjoy the pilothouse as a "room with a view" both at sea and in port. With most activity centred on the pilothouse, off-watch crew can still feel included. Even on a dull day you never feel claustrophobic. With plenty of opening windows, a pilothouse is much cooler than a conventional saloon in hot weather.
Extend Your Sailing
In winter and high latitudes the sun will warm the pilothouse and keep damp at bay throughout the yacht. You will be able to sail comfortably out of season and venture into more challenging waters.
Reduced Maintenance
With the sun pouring in, a pilothouse yacht stays drier when laid up over the winter so there is far less deterioration. Your instruments will thank you for living under cover. When you do your winter work, enjoy watching the world go by from your perch in the comfort of the pilothouse.
So are there any disadvantages?
Performance
Theoretically the shape of a pilothouse may slow you down, but many modern designs are very streamlined. Anyway, with all the benefits of the pilothouse you will probably manage your boat better and arrive earlier - and in more comfort.
Looks
Some people think that a pilothouse yacht doesn’t look right. In our Directory you will see just how attractive a pilothouse yacht can be.
Privacy
There may be less privacy unless the pilothouse is well screened. Most people aren’t bothered about this, and in any event many larger yachts have a separate cosy saloon. You can always find privacy in your cabin.
The breeze
When at anchor in the Tropics, a pilothouse may affect the cooling breeze that reaches the cockpit. But if this is a concern, why do you so often see conventional yachts with their spray hoods up?
Pero en inconvenientes, se olvidan del que para mi es el principal: El riesgo de rotura de una ventana de la cabina debido a su tamaño y su posicion tan vertical que supone un gran frente al rocion de una ola.
En algunos foros he encontrado comentarios relativos a este asunto, incluso con testimonios de gente a la que le ha pasado, y todos coinciden en que es el gran riesgo de estos barcos. Como minimo si te llega a pasar y te entra una ola en la cabina, sueles perder toda la electronica, y si el mar es muy bravo y pierdes el control del barco, puede suponer el hundimiento de este.