Adjustable Seat Pedestal – 340/510 mm

This adjustable seat pedestal allows you to customize the height of your boat seat to the needs of the helmsman and the conditions on the water. With a minimum height of 340 mm and a maximum of 510 mm, it spans a wide range, making it suitable both for lower seating positions (e.g., in small boats or RIBs) and for semi-standing helm positions (in boats with higher consoles or when a better vantage point is needed).

Constructed from high-quality anodized aluminum, the pedestal is highly resistant to corrosion and will retain its shiny appearance even after prolonged exposure to sun and saltwater. The mirror-polished surface not only looks attractive but also reflects heat, preventing the metal from getting excessively hot under direct sunlight. The aluminum build provides the necessary strength while remaining lightweight, making installation and removal easier if needed.

The base of the pedestal is a wide circular plate, about 220 mm in diameter, which spreads the load over the deck. This ensures stability even when the seat is raised to its maximum height. The plate has multiple holes (typically 6) for screws or bolts – it’s recommended to use all provided mounting points with stainless hardware to ensure maximum sturdiness.

Height adjustment is achieved via a telescoping mechanism. Typically, you raise the inner post to the desired level, then secure it with a side clamping handle or a locking pin that goes through pre-set holes. The mechanism is designed to withstand vibrations and loads, so once locked, the pedestal will not slip or change height on its own. The height can be adjusted in smooth increments or a few fixed steps – depending on the design, but most clamp styles allow continuous (stepless) adjustment.

The top mounting for the seat often includes a plastic isolation plate or bushings that separate the aluminum stand from the steel seat bolts – this prevents galvanic corrosion between dissimilar metals. Some models, including this one, feature a quick-release functionality: the top portion (where the seat attaches) can detach from the rest of the pedestal, which makes it easy to remove the entire seat for transport or storage.

Example use: During a day’s cruise, the helmsman might raise the seat to ~510 mm for a better view over the bow. When the boat picks up speed or in rougher seas, the seat can be lowered to around 340 mm for a more stable, lower center of gravity driving position. When fishing at anchor, the seat can be swiveled (if combined with a swivel base) and set at the desired height to comfortably reach rods or lean against the gunwale.

• Typical use cases: Primary pedestal for helm or navigator seats on small to mid-sized powerboats; mounting a flybridge chair on a motor yacht or sailboat; seats on fishing boats where height needs to adjust for trolling or casting; in high-center-console RIBs for alternation between standing and seated driving.
• Compatibility: Compatible with all standard swivels or slide mechanisms – for example, a slider 04289 can be mounted on top for fore-aft adjustment, or the universal slide-swivel base 04265-NS if full motion is desired. It also pairs well with standard folding or fixed seats on the market – its top mounting plate is universal.
• Installation & maintenance: It’s recommended to install on a reinforced surface (for thinner decks, adding a backing plate underneath to distribute the load is wise). Use quality stainless steel bolts for fastening and tighten them in a cross pattern for even seating. After installation, verify stability – the pedestal should not wobble. Maintenance involves rinsing the adjusting mechanism with fresh water after saltwater exposure to avoid salt buildup in the clamp or pin assembly. Periodically lubricate the screw/pin of the locking mechanism lightly to ensure smooth operation. If the aluminum surface begins to lose luster, you can gently polish it with an appropriate aluminum cleaner to restore the finish. Avoid abrasive scrubbing to keep the anodized layer intact.