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BOW THRUSTER

Printed From: myHanse.com
Category: Hints and Tips
Forum Name: 345/348
Forum Description: 345/348 Hints, Tips and News
URL: http://www.myhanse.com/forum_posts.asp?TID=11691
Printed Date: 03 December 2022 at 03:43
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com


Topic: BOW THRUSTER
Posted By: Davisico
Subject: BOW THRUSTER
Date Posted: 02 December 2019 at 08:24
?Buenos días, soy nuevo en el foro y recientemente compré un HANSE 345 de 2013.
He pensado en poner un hélice de proa, ¿alguien lo ha puesto en su 345? ¿Puedes proporcionar alguna información o fotografías?
Muchas gracias.



Replies:
Posted By: Captain Cook
Date Posted: 02 December 2019 at 11:51
Hola Davisico
!Pienso que esto es la primera vez que he leido un mensaje en el Castellano en estas páginas!
Hoy, todo el mundo entiende por lo menos un poco del inglés, y para un miembro nuevo la función "search" es importante. "Advanced search>All Forums>Any Date" es la manera de descubrar un montón de informaciones del barco. Al primero tiene que leer el mensaje del Almirante Fendant, que vive en Suiza, y que tiene un Hanse 345 con un hélice de proa "Exturn 300".
Yo también tengo el Exturn en mí Hanse 400 hace dos años.
https://www.myhanse.com/search_results_posts.asp?SearchID=20191202112843&KW=exturn
https://www.myhanse.com/exturn-bow-thruster_topic8191&OB=DESC_page2.html
Hace un par de dias el Almirante hizo un mensaje a un miembro nuevo, dudando como este miembro era poseedor de un Hanse. Entonces recomendo para usted, como para todos los nuevos miembros, que no solo poner el nombre del barco en estas páginas, sino un poco más de informaciones.
Como puede ver, yo y muchos de los otros miembros dan un poco más informaciones que usted.

No he hablado el Castellano regularmente hace cuarenta años, y entonces puede ser que la gramática y un par de frasas no son totalmente correctos.
No soy marinero, soy Capitán.
Saludos
:Kjeld





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Freya H400 #27 (2006), 40HP 3JH4E, 2-cabin, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)


Posted By: Nilandhoo
Date Posted: 02 December 2019 at 14:49
Hola Davisico,
mira este post.Tengo un 325 y acabo de instalar un hélice de proa de túnel. Avíseme si desea más información. Solo hablo un poco de español pero Google ayuda!

https://www.myhanse.com/retractable-bow-thruster_topic11672.html" rel="nofollow - https://www.myhanse.com/retractable-bow-thruster_topic11672.html
Saludos Pablo


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Hanse 325 'One Life'


Posted By: Captain Cook
Date Posted: 03 December 2019 at 16:20
The reason I mounted the Exturn on my boat, was the price. A retractable thruster costs three times as much, and a normal (equal-priced) tunnel-thruster is in my opinion not suitable for a Hanse due to the flat bottom. Try to show this picture to an engineer, and ask, if he/she will recommend the placement of the thruster, taking into consideration the structural weakness which occur because of the two big holes in the fibreglass. Furthermore, the thruster is located very close to the waterline, so there will be a lot of foam, but little effectiveness.
In this forum the retractable thruster has recieved some criticism, try the search function.

Para traduccíon a otros idiomas se puede usar "Google Translate", porque la lengua oficíal aqui en estas páginas es inglés. Es claro, que como un miembro, que no habla tanto inglés, tiene una problema, puede escribír un "PM" (correo personal) para mí o a otro miembro que entiende el castellano. Soy danés, pero estuve la primera vez en España hace cinquenta años como joven, y despúes he estudiado y trabajado varios años en el Sur.




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Freya H400 #27 (2006), 40HP 3JH4E, 2-cabin, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)


Posted By: CrocDundee
Date Posted: 03 December 2019 at 22:12

Our bow thruster on a 2012 Hanse 345 as requested. 

We are quite happy with it. Was on the boat when we purchased her. Very handy in marinas, particularly when reversing into tight spaces or to compensate for wind on the bow. Seems to be deep enough to be effective and does not cavitate or produce lots of air bubbles. 

It is wired into the house batteries with big cables running to the thruster motor. Tunnel and motor seem to fit fine just in front of water tank. 


-------------
Hanse 345 - Tenacious. Sailing on the Solent and now to the west coast of Scotland.


Posted By: Davisico
Date Posted: 12 December 2019 at 06:38
?Good morning, I have been traveling and I have not entered the forum, thank you all for the answers, especially those who have done it in Spanish, And excuse me ... not having written in English, now I write using google translator, I hope You understand me by writing.
As I said recently I bought a Hanse 345, short draft (1.50m), I have it on the coast of Alicante - Spain and my intention is to navigate the Spanish coast and the Balearic Islands in the Mediterranean.
I'm thinking of putting the bow thruster, because here some ports are narrow, it is much easier to maneuver, although they say you lose some tenths of speed.


Posted By: Davisico
Date Posted: 12 December 2019 at 06:53
?Gracias Capitán Cook, usaré el motor de búsqueda para las próximas búsquedas.
En cuanto al propulsor de proa, creo que montaré un túnel, es el que me da más confianza.
Por cierto, hablas muy bien español  Aplaudir, espero tus estancias por mi tierra estaban agradables.
Un saludo.


Posted By: Davisico
Date Posted: 12 December 2019 at 06:59
?Thanks for the CrocDundee information, I will speak with the professional to study the possibility of installing the bow thruster taking the power from the service tubs, without having to put an exclusive battery for the bow thruster. Since the batteries are under the seats, they are not relatively far from the bow.
Thank you.


Posted By: pdc78
Date Posted: 12 December 2019 at 09:12
I too have a tunnel bow thruster on my H345.  It is a Side Power SE40, and works very well.  It was installed by Osmotech (Port Hamble, UK) when the boat was first commissioned.  I also paid for the wireless remote control option which also operates the anchor windlass which candidly, has been used very little.  The bow thruster is great and is regularly used.  Teflon based antifoul must be used on the propeller.

Good luck - Paul


-------------
H345 #269


Posted By: Nilandhoo
Date Posted: 12 December 2019 at 09:22
We also have a Side Power SE40 installed, I have a series of pictures from the installation.  If you would like to see them let me know and I will send you a PM with a link.

Paul


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Hanse 325 'One Life'


Posted By: Davisico
Date Posted: 13 December 2019 at 07:15
[CITA = Nilandhoo]
También tenemos un Side Power SE40 instalado, tengo una serie de imágenes de la instalación. Si desea verlos, hágamelo saber y le enviaré un PM con un enlace.

Paul
[/CITAR]


Si es posible, si me puede pasar algunas fotos sobre la instalación.
Gracias 


Posted By: Nilandhoo
Date Posted: 13 December 2019 at 08:51
Hola
Te envié un PM con un enlace a las fotos. Avísame si necesitas más información.
Saludos

Pablo


-------------
Hanse 325 'One Life'


Posted By: Richard M
Date Posted: 13 December 2019 at 13:55
To add from my own experience. On my previous Hanse - a 400e - I had a Sleipner tunnel thruster fitted by Osmotech at Hamble Point. The tunnel had "eyebrows" shaped around the tunnel entrance to reduce the drag caused by the apertures.

A few years ago the sailing journalist Tom Cunliffe took my boat (Providence) out and produced a few videos. He was impressed by the thruster - and not least the ability to control the thruster remotely - eg from the pontoon. If you Google " https://www.google.com/search?client=safari&rls=en&q=Tom+Cunliffe+bow+thrusters&ie=UTF-8&oe=UTF-8" rel="nofollow - Tom Cunliffe bow thrusters " you should find the articles and videos. 

Osmotech's workmanship was excellent; they also provided great back up when the remote control failed and I was circumnavigating the British Isles. I subsequently had Osmotech fit retractable bow and stern thrusters to my current Hanse 455.

I know purists will say that thrusters are unnecessary and they may well be right if berthing manoeuvres a practiced frequently. I do not. This summer the ability to glide sideways into a seemingly impossibly tight spot on a river pontoon with a strong tide running - complete with an "audience" on the pontoon expecting it to all go horribly wrong - did elicit a degree of disbelief in the crew. There were just a few centimetres gap between the boats.



-------------
Richard M

(S/Y BrightStar - H 455 #90; ex S/Y Providence - H 400e #290)


Posted By: Fendant
Date Posted: 13 December 2019 at 16:07
Richard,

spot on!

When you have the silent exturn the curious "Pontoon Admirals" will not immediately notice the side thruster due to the windnoise

-------------
Frank


Posted By: Davisico
Date Posted: 19 December 2019 at 12:32
Originally posted by Richard M Richard M wrote:

To add from my own experience. On my previous Hanse - a 400e - I had a Sleipner tunnel thruster fitted by Osmotech at Hamble Point. The tunnel had "eyebrows" shaped around the tunnel entrance to reduce the drag caused by the apertures.

A few years ago the sailing journalist Tom Cunliffe took my boat (Providence) out and produced a few videos. He was impressed by the thruster - and not least the ability to control the thruster remotely - eg from the pontoon. If you Google " https://www.google.com/search?client=safari&rls=en&q=Tom+Cunliffe+bow+thrusters&ie=UTF-8&oe=UTF-8" rel="nofollow - Tom Cunliffe bow thrusters " you should find the articles and videos. 

Osmotech's workmanship was excellent; they also provided great back up when the remote control failed and I was circumnavigating the British Isles. I subsequently had Osmotech fit retractable bow and stern thrusters to my current Hanse 455.

I know purists will say that thrusters are unnecessary and they may well be right if berthing manoeuvres a practiced frequently. I do not. This summer the ability to glide sideways into a seemingly impossibly tight spot on a river pontoon with a strong tide running - complete with an "audience" on the pontoon expecting it to all go horribly wrong - did elicit a degree of disbelief in the crew. There were just a few centimetres gap between the boats.


Yes, I have seen the "eyebrows" on many bow thrusters, I suppose to divert the flow of water and the ship to slide better.
Regarding the remote control, I have it in the anchor motor, I suppose it will be something similar.
I guess the bow thruster will subtract 0.2 or 0.3 kn, from the speed of the boat, but the comfort and tranquility when maneuvering in narrow places is worth it. Especially not to hit the ship.
Thank you.


Posted By: Davisico
Date Posted: 19 December 2019 at 12:39
Originally posted by Nilandhoo Nilandhoo wrote:

Hola
Te envié un PM con un enlace a las fotos. Avísame si necesitas más información.
Saludos

Pablo


Thank you very much for the photos, the whole process step by step.
Thank you.


Posted By: Richard M
Date Posted: 20 December 2019 at 23:22
Hi Davisico

The installers of the tunnel thruster - Osmotech - said that a well shaped "brow" would ensure there was very little impact on the boat's performance. The H400e was certainly quick and usually outpaced similar (and sometimes much larger) craft with ease. Although I had changed the self tacking jib for a large Genoa....

The Sleipner remote control also operated the anchor which meant that I could carry out this action from the cockpit if necessary. 

I don't think the tunnel weakened the hull; Osmotech glassed in a very substantial thruster tube.

Good luck with your own installation!


Richard




-------------
Richard M

(S/Y BrightStar - H 455 #90; ex S/Y Providence - H 400e #290)



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