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Sea Ray 480 Sedan Bridge

The published record on this model and what owners report, with the questions worth asking while a boat is still a listing. This page covers the model. Every boat still needs its own homework.

A capable, roomy planing flybridge cruiser whose Loop fitness turns on air draft and fuel range. It's a thirsty planing hull that is not a displacement trawler.

The Sea Ray 480 Sedan Bridge is a planing flybridge cruiser built from 1998 to 2004, 51'2" with her swim platform, with a 15'3" beam, a 3'9" draft and 500 gallons of fuel. The PowerBoat Guide describes three staterooms with the master forward, a fully cored hull, standard 535-horsepower Detroit 6V-92 diesels and optional 660-horsepower Caterpillars, and YachtBuyer's page describes a Cummins QSM-11 package. Boats on HMY's listings ask about $250,000 to $350,000. Owners report heavy fuel burn even slowed down, and one owner reports about 22 feet of air draft with everything up, so range and height are the first two numbers to settle.

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How to read the tags on this page. QUESTIONopen, and settled by looking at the boat itself CONTEXTbackground on how this model is built or used Sources are linked where published.

Range & fuel burn

CONTEXT
This is a thirsty planing hull, not a displacement trawler Owner data points cluster around heavy fuel use: CAT boats near 30 gph total at ~20 kn cruise, Detroit boats around 4.3 gal/mile, and broad third-party figures of 40–50 gph on plane. A general owner estimate is 0.5–0.75 mpg on a good day because it is a heavy boat. Slowing to Loop displacement speeds helps less than on a trawler. A planing hull plows a hole in the water and is inherently less economical at low speed. src: The Hull Truth; BoaterEd; Trawler Forum
QUESTION
What is this boat's actual usable tankage, and what range does that give at your planned Loop cruise speed? Owner figures suggest relatively short legs for a planing hull at cruise. With the reported tankage and ~40 gph total on plane, real-world range can be tight for longer open-water Loop legs, and running slow does not recover much economy on this hull form. src: The Hull Truth; Club Sea Ray; BoaterEd
Your move: Confirm the actual fuel capacity on this hull, then compute range at both your intended cruise speed and a slow speed, and map it against the longest fuel-free legs on your route.

Air draft & clearance

QUESTION
What is the measured air draft, and what can actually be lowered? Air draft is the central Loop question for this model. One 480DB owner reports about 22 ft with antennas and everything up, noting it may be less with antennas down. The hardtop/bridge arrangement makes this a tall boat, and how much of that height can be removed determines whether it clears the Loop's controlling fixed bridges. src: Club Sea Ray
Your move: Measure the actual air draft to the highest fixed point, then identify exactly what unbolts or folds (antennas, radar, arch) and how much height that recovers; get it in writing before an offer.
CONTEXT
Height also drives storage and shrink-wrap logistics Owners note the majority store these boats indoors because of the height, and that most marinas won't order shrink wrap wide enough to cover the hardtop. This is a practical planning/cost consideration for haul-outs and off-season storage along the route. src: Club Sea Ray

Systems

QUESTION
Is there any history of rainwater intrusion into the engine room? A 480 owner reported rainwater entering the engine room, running across the hot water tank and shorting out controls, ruining batteries and an inverter. This points to deck/superstructure sealing as a possible weak point on the model rather than a certainty on any given hull. src: Club Sea Ray
Your move: During survey, inspect the engine room for water-staining and corrosion after a rain or a deck-flood test, and check battery/inverter/charger condition and mounting height.

Reading the boat

CONTEXT
On this model, condition and care trump hours and headline specs Across forums, experienced owners warn that a neglected example can become a costly, drawn-out project. One veteran flatly called a poorly kept boat 'a dog with fleas.' Systems, engine care, and water intrusion history separate a sound boat from a money pit more than year or hours do. src: Club Sea Ray

Engines

The engines research is part of the full profile inside the product. It covers factory options, tested performance and the engine-specific questions in our members' dossiers, and it travels with every dossier and survey brief built on this model.

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