This is without doubt the ultimate toy to have. But it's actually not a toy! It's a fully ABS classed submarine, capable to go down to 457 m (1500 ft). Yep. Serious stuff. With a serious price tag too.
The photo below shows the sub placed on a platform at the stern but we would place it on the main deck in front so we don't increase the length of our vessel with would affect us in our Panama Canal transits.
We'll be ready for it but for the time being, this $ub will have to wait.