Seaview Modular Top Plate for KVH TV5, HD7, FB500, V7

Seaview builds mounts for the gear that lives up on your hardtop or radar arch, and the Modular Top Plate is the piece that ties your satellite dome to the mount underneath it. If you've ever looked up at a poorly mounted satcom dome and seen a dozen mismatched holes drilled through the base, you already understand why this plate exists. It's the clean way to secure a dome to a Seaview modular mount.

Here's how the system works. Seaview's modular mounts are built in two parts. You've got the base mount that bolts to your boat, and a top plate that's cut to match a specific piece of equipment. This ADAS2BLK is one of those top plates. It drops onto a Seaview modular mount and gives your dome a purpose-built landing pad instead of a generic slab with a scatter of holes. The result up top is only four visible mounting screws holding the electronics down. No swiss-cheese look, no guesswork about which holes matter.

That clean four-screw footprint isn't just about looks, though it does look sharp. Fewer penetrations means fewer places for water to work its way in, and a plate that's actually machined for your dome sits flat and true. You're not shimming anything or hoping a universal bracket lines up. It bolts where it's supposed to bolt. And because the plate carries the load across its full footprint, the dome sits solid at speed instead of drumming against a couple of point contacts.

Corrosion protection is where Seaview earns its keep. This plate gets a hardcoat anodizing treatment before it's powder coated, so you've got two layers of defense against salt air and spray. That matters when the part is mounted high and exposed, taking sun and salt every day the boat's in the water. A raw or single-coated plate up on an arch tends to chalk and pit within a season or two. The hardcoat-plus-powder finish holds up a lot longer. The finish here is black, which blends in nicely under a black dome and against dark hardtops and arches. It's a small detail that keeps the whole installation looking intentional.

One thing to get right before you order: this is a top plate, not a complete mount. It's designed to sit on a Seaview modular mount, so you'll want to confirm you've got the matching base for your install, whether that's a mast mount, a rail mount, or a flat-surface mount. And just as important, a top plate is cut for a specific set of antenna domes. Check the compatibility list in the specifications below and match it to your exact dome model before you buy. Order the plate that fits your equipment, not the one that looks close.

Installation is manageable for a competent DIYer. The base mount does the structural work, so once that's through-bolted with a proper backing plate, dropping the top plate on and setting the dome is straightforward. Snug the four screws evenly, bed everything with a good marine sealant, and you're done. Take your time on the sealant so the fastener holes stay dry for the life of the mount. If you're mounting a heavier dome, take the extra minute to make sure your base and backing are up to the load before you send the boat offshore.

Who's this for? Anyone running a satellite TV or satcom dome who wants it mounted like the factory would've done it. We see these go on sportfishers, cruisers, and trawlers where there's a real communications setup up top and the owner cares about a tidy, corrosion-resistant install. It's a straightforward part, but it's the difference between a dome that looks bolted-on and one that looks like it belongs there. If you're not sure which top plate and base combination fits your dome and your boat, give us a call and we'll help you spec the right pieces.