Hmm, can't edit the message above, have to put up a new one.
Still re the pic above of a Rhine barge, although fine for river and canal work it doesn't look too adequate for open seas. Of course you may have days in which the English Channel is smooth as a mirror but you will only have a limited time frame for that, and in the sea nothing is guaranteed, remember how rotten weather was in the immediate days befor June 6,'44?
Besides there is another matter. Where is this going to be unloaded? This craft can only be loaded/unloaded when tied alongsade a quay as compared to the built for the purpose one below.
That barge (and it's +/- 2,500 sisters) is clearly not an beach assault craft. To be able to use it needs to have a minimally equipped harbour, with a quay and lifting tackle. This harbour must have been taken beforehand so the barge flotilla can have somewhere to unload.
Taking this into consideration and also Anzac's post of Jan 31st, it doesn't not augur very well for the Operation Sealion, perhaps a better title would be Operation Shipwreck.