Collection: Portable Toilets

Choosing the right marine toilet depends on your boat layout and how long you are out. The Thetford Porta Potti range runs from compact units like the 135 and 335 up to the larger 565E Curve with electric flush and the 550P MSD, which meets marine sanitation device requirements for regulated waters. Dometic offers the 975 in standard and MSD-compliant versions, both with mounting brackets included, plus the M65, a more permanent gravity-flush toilet with a foot pedal and a choice of standard or elongated seat. The Commodore injection-molded 4.75-gallon unit is a simpler self-contained option for those who want straightforward portability without extra features.

Before buying, check holding tank capacity against your typical trip length and confirm whether your cruising area requires an MSD-certified unit. Some Thetford models include a hold-down kit, others do not, so read each product listing carefully before assuming it is bundled. For the Dometic M65 and similar gravity toilets designed for fixed installation, measure your head compartment and verify plumbing connections before ordering. Seat size and color choices on the M65 also vary between listings, worth noting if you want a consistent look in a permanent installation.