Peter Madsen of Copenhagen has solidified his position as a very productive submarine builder.  Below is a photo of his latest project the gigantic UC3.  Finally we see Peter's latest thoughts on design, using a cylindrical section pressure hull married to a full length deck, UC3 is a diesel-electric sub intended for long range cruising and dives to, I believe, 100 meters.

I believe he's estimating another year before she's in the water.

Some random details: 30 ton displacement, 6 foot diameter pressure hull, and 3500nm range.  More photos and details to follow.