Stormy medieval boats

Duccio di Buoninsegna [1308-1311] Jesus calling Simon Peter and Andrew

Currently, the painting I am working on is a bit of a disaster. It seemed to be going okay until I kept working on the robin in the foreground, only to have it end up looking comical. After a while, I figured it was the wrong bird. Frustrated, I changed the bird. The bird still looks a bit comical but it's singing or is it singing a warning? This has changed the painting from me thinking about holding on in a difficult place to actually one of pushing out to help others in disaster. This seems a bit strange but if it is what the painting wants, I'll do my best to do it. 

Boats and stormy weather brings to my mind Jesus walking on the water towards his disciples. Together with my love of medieval art, this has led me to investigate images of medieval boats today. One article I read this morning in The pelican papers, had a humorous bit of text about Peter, the Rock or "Rocky" for short.  Peter takes a few steps walking on water to meet Jesus. Frightened by the wind and sinking into the waves, Rocky calls for help. Jesus pulls him out of the drink. And then, 

"What's the matter, O faithless one? Jesus says with a grin. Scared of a little wind, a big old fisherman like you? Why did you doubt?".

Ah, the eternal question from a God who likes to act in unfathomable ways. Why did you doubt? 

Well, these images here have given me a start to how I can work a medieval type boat into my painting. I thought I'd share the images with you so you can enjoy them like I have. I found the names difficult to trace on some, so I am sorry if there is no attribution to the original artist. I also highly recommend checking out the medieval ship models made by Tucho Fernandez Calo, which can be seen on his website. 

Jesus and Peter walking on water