Now that I received an AutoCAD drawing of this deck, I started to play around with the location of the tenders and it looks like the setu shown here works best.
The aft ends of the tenders will extend a little beyond the deck to allow walking space around the funnel superstructure and allow people to come up the stairs without hitting their heads against the bow of a tender!
Alternatively, we can also keep a tender at the top deck near the bow. Or simply keep or tow them in the water. We'll probably put a small tender crane at the port side of the funnel superstructure. The one that would also puts the float plane onboard, remember ? :-) .