Pause. Takes deep breath….
ALL design work of this kind has copyright attached to it for a longish period, no matter whether the owner realises this or not, or is even alive. Copyright is in effect a statement about the ownership of the intellectual property (IP) rights.
The Keil Kraft plans on my EeZeBilt site are copyrighted to Amerang, who have kindly given me permission to present them on the web for free download.
The data on my Marinecraft and Taycol websites are believed to be ‘orphans’. This is a term used for IP which has no clear owner and is in danger of being lost. But they still have a (virtual) copyright. If, for instance, the Marinecraft plans suddenly became valuable there would no doubt be claimed owners, a series of court cases, and a decision on either the valid owner, or a statement that they were in the public domain (70 years after the death of the creator).
For items such as these I follow the EU Orphan Works Directive in conducting a diligent search for the owner and maintaining a download record for fair compensation, but I have not as yet registered with the EUIPO Orphan Works Database. This is partly because I am not sure who the UK national competent authority for old model boat plans would be. If any issue arises, I will probably register and let the EU sort it out – which I expect would last beyond my lifetime! Where I do find an owner (for instance Hobbico for Sterling plans) I obtain written permission to distribute. Occasionally, as with Mid-West, they refuse this permission, so I do not distribute. I also do not distribute plans for boats which are currently being marketed, such as the Aerokits range.
The sites, as explained in the initial pages, are primarily a place to save old boat plans from being completely lost. I believe that placing them on the Web, and hence allowing multiple copies to exist, is the most cost-effective way for a single hobbyist to ensure this. If they are still being commercially marketed, or available from companies’ archives like Dumas, they are not lost, so they are not included. There is no monetarisation involved here – I pay all the costs and do not incorporate any advertising. So I intentionally make no profit from distribution. I have refused offers of financial assistance in order to remain completely independent. Though it would be nice if someone would consider mirroring the sites in order to provide resilience…
The ‘EeZeBilt 50+’ plans are mainly my own work, so I retain copyright. These are released under the Creative Commons CC-BY-NC-SA license, which is one of several public copyright licenses produced by the Creative Commons organisation. This allows recipients free use to share, copy, and adapt a work, provided you give the creator credit (BY), do not use it for commercial purposes (NC), and share any modified versions under the exact same license (SA). If you would like to contribute, your work would be released under that copyright license.
I keep half an eye on various outlets such as eBay. If I became aware that my plans being sold there I would contact eBay, provide proof of ownership, and ask for the seller to be removed for breach of sales terms. If I found the original KK plans from my site for sale I would contact Amerang, who would no doubt do the same thing. Though note that there is only one of me, and I have many other things to do!
I assume that either you or Model Boats magazine retain copyright on your plans, and that if you found them being sold in breach of your copyright you would do something similar. Note that is is quite reasonable to sell an original copy of a plan. What you must not do is sell photocopies.