I'm building the Airfix 600 scale Iron Duke and have the White Ensign PE add-on for it. I've never done anything serious in PE but I want to get this right - I can see it's very important for ship building. (We can't let our 700 scale sailors go around without railings can we? They'd get washed overboard really easy.)
Railings and ladders do look like a challenge, but obviously it's a matter of live and learn. I'm scratching my head about build sequence though. I'd think that putting on PE railings would be easiest to do after the deck is painted and before anything is put on it. You'll never get another chance to work without obstruction from other parts or see things as well. On the other hand, I've done enough PE on tanks to know its fragile and that might argue for putting it on at the end. Would certainly like the views of wiser heads.
While we're at it, the PE includes several small rectangles (squares maybe) that are covers for water tight doors. I've never been on a ship and haven't a clue where a water tight door would show up. (Actually I've been on dozens of ships, but I've never once asked a sailor where water tight doors are. The Airfix Iron Duke does not overflow with surface detail: can't say that I can really make out any doors on the superstructure parts.) The chart provided by White Ensign locates the position for all the other parts but no water tight doors. They're part #1: part #2 which looks very much the same are hatch covers. They are to cover the little rectangles that show up on the deck of a 700 scale ship. (I've always wondered what those were, and never really knew whether to paint them or not. Now that I know, I'll go back and look at the galleries on some of the ship boards: bet I'll see things I didn't before.) Anyway, if you have any idea (or guesstimate) where a water tight door cover might go let me know and I'll stick some metal on it if it looks the right size. I'd like to do it right - naval fans are sticklers for detail - worse than armor-holics I think. (Although it might be a tie. There's a thread going on now about what kind of 4 gallon can an American half track would carry for gasoline or for water. Never really gave that matter much thought.)
Eric