Hello Graham,
i have build the Minoo from Niko Models already, and i must say it is a really nice model. The Minoo was one of two Wartime Standard Type 2D freighters
being converted to a minelayer. The other vessel (#1822) was completed after the war as Kanshin Maru. The kit was almost completely build out of the
box, i have only replaced the 25mm guns with photoetched ones from Lionroar.
Using Motoyuki san´s drawings from his fantastic book i am underway to do some hull conversions on my own. These master hulls will be used then to do
castings for the sister ships then.
These are the hulls so far:
1. Mayasan Maru class (Mayasan Maru, Tamatsu Maru)
2. Kinka Maru class(Kinka Maru, Kinryu Maru)
3. Akitsu maru class(Akitsu Maru, Nigitsu Maru) and half sisters Kibitsu Maru class (Kibitsu maru, Hyuga Maru)
4. Kagu Maru class (Kagu Maru, Kashii Maru, Katsuragi Maru)
I have used the pitroad Kamikawa/Kimikawa Maru hulls as a base, correcting the hull dimensions by lenghtening and widening these hulls. Mayasan, Akitsu,
Kibitsu Maru class received a new scratchbuild stern, of course!

Doing these models is real fun and i am quite sure, that i will do more of them!

Well, using the Skywave hulls is a bit of a compromise because the shape of bow and stern of the corresponding ship may not absolutely correct.
But, since i don´t want to build these hulls entirely from scratch (call me lazy), this method seems appropiate to me.
Greetings from the North Sea Coast, Jan
