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[Martin (Admin)]

Via email to Mayhem ....

I spoke to a chap called Mike earlier and he said i should be in touch with you to discuss a potential project.
We are beginners so looking for any recommendations of people who could help us make this happen, details below!

1. We have a wooden hulled boat which is water tight (see pictures)
2. Dimensions of the boat are approx 24.5cm (w) x 120cm (L) x 19cm (h),
3. The hull is currently empty of anything. So currently no motors, RC equipment, props etc
4. We want to turn this boat into something that we can take on a long voyage in the sea from one harbour to another.
5. We need an engine power source (petrol or battery) with sufficient capacity to allow for a long voyage, perhaps up to 3 hours
6. We would prefer a two prop system for steering rather than a rudder
7. Aesthetics are not important
8. Radio range would need to be long, so some guidance of what this looks like in terms of options / cost
9. Happy for reconditioned / 2nd hand parts to be used
10. A labour cost price to do the work to make her seaworthy
11. Excel ( costs sheet ) shipping costs from us (Bristol) to your shop (?)

Let me know if you need anything else at this stage

Thanks
Ed
 
 
           

[roycv]

Hi Martin, looks like the hull had a past life as a sailing boat with 2 masts.
The voyage duration is not enough to go by you need distance involved.  The sea is up and down rather than flat so distance is higher.

The journey start and finish need defining as there are several different sets of conditions around the coast.  If it is Bristol the tide range is enormous.

I do not think 2 props and tank steering would be my first choice.  It would seem to be a relatively shallow draft and prop(s) will be out of the water for a time.  So you would keep loosing directional control.

Weight by rough calculation is about 8 -10 Kgrms.  Batteries 12Ahr minimum, brushless motor for efficiancy.  Too light a displacement will allow for wind to blow her around.

Boat needs to be painted coloufully to allow for keeping her in sight.  Puzzled over radio range, is that out of sight?  Unless there is other technology involved.

Has the project person had any experience of working models?   They get to be very small at a distance especially among waves.

Good luck
Roy

[Sonar]

Seen something else
Like this I think it was two brothers using rc boats to Iceland
I think it was anyway never paid it much attention at the time .


Maybe worth looking up  may have details of their setup

[SailorGreg]

As is often the case with this type of request, there are so many questions raised by the brief statement of requirements that only a proper conversation will answer -
What do they actually want to do with the boat?
How long is "long" range for the radio? 1 mile, 10 miles ...?
Will it have to operate whatever the weather or only in ideal conditions?
Why the preference for tank steering rather than a rudder?
Is the boat to carry any sort of payload, will there be any superstructure needed?

And on and on.  Clearly there is major surgery needed to the hull and deck to fit any propulsion and RC. It might be that it would be better/easier/cheaper to start with a new hull rather than try and make this one do whatever is required.
As I said, a two way conversation is needed.
Greg

[warspite]

Recently watched a youtube video (via the mayhem section on youtube videos) where a gentleman set up a boat to sail autonomously a course in a waterway without being anywhere near it, i.e. he drove 10 minutes away to a coffee shop and then returned and it was still following the course set, I think his aim was to set this to use GPS tech to keep in touch, its worth watching the video.


The kids recently got permission to deploy from somewhere in the southern hemisphere two replica sailing ships that are trackable to monitor sea temperatures in the antartic ocean, again this was reported in mayhem on the In the news thread.

[NickelBelter]

As is often the case with this type of request, there are so many questions raised by the brief statement of requirements that only a proper conversation will answer -
What do they actually want to do with the boat?
How long is "long" range for the radio? 1 mile, 10 miles ...?
Will it have to operate whatever the weather or only in ideal conditions?
Why the preference for tank steering rather than a rudder?
Is the boat to carry any sort of payload, will there be any superstructure needed?

And on and on.  Clearly there is major surgery needed to the hull and deck to fit any propulsion and RC. It might be that it would be better/easier/cheaper to start with a new hull rather than try and make this one do whatever is required.
As I said, a two way conversation is needed.
Greg

Major surgery?  I'd say it's completely unsuitable for anything except a sailing model for calm ponds, which is obviously what it was intented for. 

I've seen a couple of whale-surveying boats built from what was originally a model tug hull.  The amount of effort was... considerable, as was the cost, and they were not meant to do any kind of long-distance sailing
https://russelbrothers.com/images/models/models.html