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Forum: Propellers & Drive Systems

11-11-2013, 12:09

Replies: 63

Externally Mounted Bow Thruster vs. Traditional Tunnel Type

Views: 32,124

Posted By boatpoker

Re: Externally Mounted Bow Thruster vs. Traditional Tunnel Type

If you do decide to go with a tunnel thruster, consider going with a 24volt unit run off two batteries at the bow with a series/parallel switch. Much more power with much lower amperage draw.

Forum: Propellers & Drive Systems

10-11-2013, 06:26

Replies: 63

Externally Mounted Bow Thruster vs. Traditional Tunnel Type

Views: 32,124

Posted By boatpoker

Re: Externally Mounted Bow Thruster vs. Traditional Tunnel Type

A little fairing in front of the tube makes sense, so that's the way I installed it (no fluid dynamics study).
I'd also suggest doing it yourself, it's a weekend job with a little knowledge and...

Forum: Propellers & Drive Systems

10-11-2013, 02:48

Replies: 63

Externally Mounted Bow Thruster vs. Traditional Tunnel Type

Views: 32,124

Posted By boatpoker

Re: Externally Mounted Bow Thruster vs. Traditional Tunnel Type

I've only seen two external units (not even sure they are same brand) and I am in fresh water. Within 2-3 years of installation they both had corrosion and electrical problems . The mechanic who...

Forum: Propellers & Drive Systems

09-11-2013, 18:33

Replies: 63

Externally Mounted Bow Thruster vs. Traditional Tunnel Type

Views: 32,124

Posted By boatpoker

Re: Externally Mounted Bow Thruster vs. Traditional Tunnel Type

I've docked more than a few 50-65 foot twins and I have never used the rudders as they tend not to work well without some flow over them which does not normally happen at docking speeds

Forum: Propellers & Drive Systems

09-11-2013, 17:20

Replies: 63

Externally Mounted Bow Thruster vs. Traditional Tunnel Type

Views: 32,124

Posted By boatpoker

Re: Externally Mounted Bow Thruster vs. Traditional Tunnel Type

You'd need one hell of a thruster to overcome that, likely more than what is available off the chandlery shelf

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