07.03.06
Dockyards required for Ship construction
The V6 rules require that most pre-steam ship units of any size be built at a friendly port city containing a Dockyard. As part of the inter-turn conversion, if you have ship units on your stats that your nation built (they did not arrive via Export!) then you get a free Dockyard project. Just let me know which friendly port city you want it placed in.