Can anyone recognize this boat?

[Arek Lys]

Hello there
This is Arek Lys. I've just registered to this forum. I'm from Poland, used to love sailing in the past, recently trying to renew my hobby. I bought a small sailboat. This is selfmade hull which requires some work to get it finished.
When I bought it there was no any documentation for it and I need it in order to be able to continue the work.
I'd like to ask you all for little help, maybe someone can recognize what type of boat is it and/or who is the designer, so I can contact him and purchase the design documentation.
Please have a look at this video

at 50th sec the whole hull is presented well. It is 8.5 m long and 2.5 m wide. I believe the stern is not a common type.
I'm not sure if I use proper naming but there is no fixed kil, it has a small chamber for ballast at the bottom. I'm trying to figure out the weight of the required ballast and the size of mast and sails. Also the installation details, how can I fix the mast to the hull. I suppose it is called rigging, right?
Any help appreciated.

All best
Arek

 

[Apex]

Don't recognize the boat, but the centerboard is there.

 

[Jackdaw]

Paging @Bosman ......

 

[rgranger]

Beautiful boat. I look forward to more pics once you have it all sorted out.

 

[Ron20324]

The way the stern kicks up looks familiar- like something I've seen in recent weeks? ESPECIALLY THE TWO LEVELS OF THE LIFELINE STANCHION FEET. The two "oars" attached to the lifelines... are there also 2 places to atach them to the rail or deck, the purpose being to prop the boat up on the sand flats when the tide goes out from underneath the boat?

 

[Tally Ho]

Was that a bow thruster on that boat?

 

[JohnShannon]

yes at about 4 min he is fooling with the thruster.

 

[Captain Ron 18]

Reminds me very much of a Southerly - very sweet boat manufactured in England. Although if it’s a home build, probably not unless they sell plans...