It includes a forward section constructed from transparent acrylic panes for greater visibility, as compared to the portholes of traditional submarine vehicles.
The dive angle is partially accomplished with the battery holder, weighing 1,750 kg (3,860 lb), sliding back and forward on rails.
[1] The passenger section of the pressure hull consists of two intersecting transparent acrylic spheres produced by Stanley Plastics Ltd, West Sussex.
The diesel-electric configuration of the Alicia allows the submarine to be placed on station at the dive site relatively rapidly, without the need for a large towing vessel and without eating into battery reserves.
In addition, it is possible to charge the air banks (used to "blow" the main ballast tanks) when under way on the surface, reducing maintenance time at the dock.