[PSUBS-MAILIST] Sat Dive

[James Frankland via Personal_Submersibles]

Hi Emile.

Looks an interesting idea.  Maybe I will give it a try.

Thanks
James

On 28 September 2015 at 14:04, Emile van Essen via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Yep, I know the problem. Due to the bad hydrodynamics the sub pulls strong
> to left or right.
>
>
>
> We have good result with towing beside the support vessel( up to 5 Knots).
> Much better to control in canals and marinas. But will not work when the
> waves getting higher.
>
>
>
> Emile
>
>
> ------------------------------
>
> *Van:* Personal_Submersibles [mailto:
> personal_submersibles-bounces at psubs.org] *Namens *James Frankland via
> Personal_Submersibles
> *Verzonden:* maandag 28 september 2015 12:36
> *Aan:* Personal Submersibles General Discussion
> *Onderwerp:* [PSUBS-MAILIST] Sat Dive
>
>
>
> Hi All,
>
>
> I did a day of diving on Sat.   My brother towed me round to a nice bay
> the other side of the harbour.  The dives themselves were excellent if
> fairly eventless.  Got to a depth of 10m.  My new motor controls worked a
> charm.  This is obviously how the K boats are supposed to be driven.  I had
> the ballast just right this time and I could drive up and down on the
> rotating motors.
>
>
>
> However, the issue of the day was the tow.  What a nightmare.  I had
> welded 2 rings onto the front of each battery pod and rigged a long line
> between the two.  Then had a main tow rope attached to that.  The idea was
> to pull it from the bottom and at both sides.  This was a complete failure
> as the main line slipped around to one side and my brother had real
> difficulty pulling me sideways.  We were going across the mouth of the main
> harbour and because of the incorrect tow line, we were going so slow that
> port control had to radio a couple of commercial boats to wait for us.  Of
> course I couldn't get out to adjust anything, nor could the boat, so we
> just had to press on until we got there.  It was extremely unpleasant as I
> was being crashed about sideways while trying to breath through the snorkel.
>
>
>
> The way back was a lot better as we rigged the tow line to the forward
> rail, something I didn't want to do.  Anyway, it towed a lot better and did
> not damage the rail mount. I have some video of the way back as I was able
> to film.  On the way there I was too busy hanging on.
>
>
>
> We left earlier than intended in order to give us plenty of time to get
> back, and because the tow back was better, got back too early.  I had to
> tie to a mooring buoy and wait.  The wind got up and I had sit with the
> hatch locked for an hour and a half waiting for the marina gate to open.  I
> was worried I wouldn't be able to open the hatch to release the line, but
> as it turned out, I just did it real quick and it was all ok.
>
>
>
> I suppose with hindsight its pretty obvious that initial rope wasn't going
> to work.
>
>
>
> Lesson learnt.  Tow from the front bar.
>
>
>
> Dives themselves were really good.  Got some good video etc which I will
> post when I have edited it up.
>
>
>
> pic of boat on tow on the way back.
>
>
>
> Kind Regards
>
> James
>
>
>
>
> ​
>
>
>
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>
>
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