Sea-Dog Heavy Duty 316 SS Adjustable Deck Mount Antenna Mount | SED-329235-1
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sea-Dog Heavy Duty 316 SS Adjustable Deck Mount Antenna Mount
The most capable antenna mount in the Sea-Dog deck hardware lineup. This heavy duty adjustable antenna mount is investment cast from 316 stainless steel and features dual swivelling mounts with an integral cable feed system — giving you full directional adjustment of your VHF, AIS, or GPS antenna while keeping the coax routed cleanly through the mount with no exposed cable on deck.
At nearly 6" tall and built from offshore-grade 316 SS, this mount is engineered for permanent installations on sportfishers, offshore cruisers, and commercial vessels where vibration, saltwater exposure, and antenna positioning demands are highest. The dual swivel design lets you dial in the exact antenna angle for optimal signal performance, and the integral cable feed keeps the installation clean from base to antenna tip.
Key Features
- Investment cast 316 stainless steel – offshore-grade corrosion resistance
- Dual swivelling mounts – full directional antenna adjustment
- Integral cable feed system – coax routes through the mount, no exposed cable
- Standard 1"-14 thread – fits most marine antennas
- Dimensions: 2-1/4" W x 3" L x 5-15/16" H
- Heavy duty construction for high-vibration and offshore environments
- MPN: 329235-1
Parts Desk Insights
Best Use Case: This is the right mount when you need the best — on offshore sportfishers, express cruisers, and commercial vessels where a standard fixed base won't hold up to vibration, spray, and the demands of a permanently mounted VHF or AIS antenna. The dual swivel is particularly valuable when the mounting surface isn't perfectly horizontal, or when you need to angle the antenna away from an obstruction. The integral cable feed makes this the cleanest installation option in the Sea-Dog range. For a simpler fixed installation, see the Sea-Dog SS Fixed Antenna Base – 4" x 2-7/8" or the Sea-Dog Stainless Steel Deck Mount Antenna Base. To raise the antenna further above deck, pair with a Sea-Dog 316 SS Antenna Mount Extension – 12" or the Sea-Dog 316 SS Antenna Mount Extension – 24". On tall antenna runs, add a Sea-Dog Nylon Antenna Stand-Off Bracket to reduce flex at speed.
Installation Note: The dual swivel design requires adequate deck space for the 3" footprint length. Confirm mounting surface dimensions and below-deck access for the integral cable feed before ordering.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.