The Tides Marine Type-D rudder port is an integrated approach to rudder port installation. It is for boats constructed of FRP. It can be used for new boat construction and is also easy to use as a retrofit for replacing other types of conventional rudder ports. No tooling is required.
The Type-D is a sealed bearing consisting of a UHMW housing with a nitrile rubber lip seal. It eliminates metal-to-metal abrasion and electrolytic corrosion.
The Type-D kit includes the bearing housing, which has a threaded OD, and a matching epoxy FRP "liner".
The liner can be laminated into an opening in the hull. Once the liner is laminated into the boat structure, it provides a preformed cavity matching the bearing profile. The bearing can then be threaded in and out for easy removal or replacement.