MK1 Internal Buoyancy

[MarkR]

Good Evening,

Does anyone know if/where the MK1 has internal buoyancy within the hull in case the hull is breached or the hatch comes off? I was changing out my hatch today and I could not see any internal sealed compartments. The owners guide says there is 60 litres of sealed buoyancy. Maybe at the bow or the big area at the stern? I could not see that far from the hatch opening.

My laser had some closed cell foam in a bag inside the hull. I'm thinking if I should add something similar - just for safety. Or is there something built in?

Thanks for any help,
Mark