Paste the listing. We check it against the Loop's hard limits and whatever we hold on that model — and we tag every claim with how well it's verified, including the ones we can't answer.
| Air draft | The one clearance you cannot route around is 19'6".
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UNRESOLVED |
| Water draft | Most listings don't give a loaded figure. Under 5'0" is the preference; AGLCA prefers under 3'0" plus local knowledge for the inside New Jersey route, and sends everyone else outside. Ask for the design figure and the loaded figure — the delta is a function of hull form, not a constant, and nobody knows it until someone measures. | ASK |
| Range | Depends on tankage and the speed she's actually run at. The number to beat is Alton to Paducah, about 250 mi — the longest published run with no fuel stop. | ASK |
| Length | Inside every practical limit, and inside a 50′ personal ceiling. Length is rarely the thing that stops a boat. It is on the list because slip and haul-out billing use overall length, not hull length. | CLEARS |
Nobody has called a yard. It's the oldest open gap in our notes on this hull family, and we aren't going to invent one from a brochure — a number nobody measured can't fail your boat, and that beats handing you a figure that only sounds like an answer.
Live from the shared model layer — the same rows a dossier renders, with the tiers and sources they carry right now.
On the 350 and 390 the swim platform is an EXTENSION OF THE HULL — it displaces water and contributes buoyancy. So a platform full of water is not just weight far aft, it is lost buoyancy at the stern, which is why it moves draft and trim more than you would expect. The originals were foam-filled with no inspection access; water leaks in at the joint under the rub rail and saturates the foam. The foam slowed complete flooding but never kept them dry. Most have since been modified with access hatches, drains, or standalone bilge pumps. Source: Gdavid (Mainship 34 MK1 owner, 390 operator), Trawler Forum, 2026-07-23
An original sealed platform is a latent water-saturation risk — weight, trim, and eventually structure. A retrofitted one has been addressed. A listing will never mention this and a survey has no particular reason to look. Source: Gdavid, Trawler Forum, 2026-07-23
Semi-planing hull; owners describe wallowing in a following sea. A Mainship 34 buyer asked whether adding an integrated swim platform would cure the same behaviour on his boat, and was told the 350/390 already ran that experiment. Gdavid: “it would increase the distance from the rudder to the back of the hull, decreasing steering effectiveness. This is basically what was done on the 350/390 and they don't handle any better in following seas.” Cartouche, who owned a 390 with the integrated platform: “it was still a bear in a following sea or a beam sea.” The platform looks like an improvement over the 34's bolted-on one, and on draft and displacement it is; on following-sea handling it is not, and it may cost steering authority. Source: Gdavid (390 operator) and Cartouche (former 390 owner), Trawler Forum, 2026-07-28
| 1996 Sea Ray 420 Aft Cabin | 2007 Meridian 368 Motoryacht | |
|---|---|---|
| Asking price | $119,900 | $224,800 |
| Matches what you asked for | 92% | 91% |
| How much of it is actually answered | 16 of 17 | 9 of 17 |
| The honest range | 85–93% | 51–95% |
| Price at or under $200,000 | CLEARS | UNRESOLVED |
We don't replace the survey — we keep you from wasting one on a boat that was never going to fit.