In both Standard and Experimental, for all the vehicles in boats192/ and boats224/, the shipyard displays the "hold" icons up and to the left of where they should be, indeed outside (and clipped) for holds in the topmost row. Perhaps the (x,y) offsets need to be adjusted -- not sure whether this is a pak problem or an engine problem... although, it appears to be a constant offset regardless of which icon location is used, so maybe it's a graphics engine problem?
(http://wlindley.com/simutrans/shipyard-graphics-error.png)