Sealand / Dometic 304811201 MasterFlush Low-Profile Macerator Toilet is an easy to install and easy to use reliable fixture. 

Fresh water flush or salt water flush available. ( additional pump needed for salt water flush)

The unit has a small footprint to fit in most head compartments.

Standard height models also available.

Several installation options to accomodate most discharge  plumbing.

Normal and dry bowl flushing options. The average water use is .6 gallons per flush.

Available in white and 12 or 24 volt power options.