40 Sea Ray 2018 Boat for Sale

ASKING PRICE: $389,990 Watch Price

Monkey Island, OK

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Yacht Photos Pics A sleek 2018 Sea Ray 400 boat cruising on calm water near a dock.

Yacht Photos Pics A 2018 Sea Ray 400 cruising on calm waters near a covered dock.

Yacht Photos Pics 2018 Sea Ray 400 on calm water, with a covered dock in the background.

Yacht Photos Pics A 2018 Sea Ray 400 cruising on calm waters, surrounded by a dock.

Yacht Photos Pics A 2018 Sea Ray 400 is cruising out of a marina. It's a sleek motorboat.

Yacht Photos Pics 2018 Sea Ray 400 in a marina, surrounded by water and boats.

Yacht Photos Pics The image shows the stern of a 2018 Sea Ray 400 with a spacious seating area.

Yacht Photos Pics Rear view of a 2018 Sea Ray 400 in a covered dock.

Yacht Photos Pics A 2018 Sea Ray 400 is docked under a covered area. It features a spacious aft deck with wooden flooring.

Yacht Photos Pics Spacious cockpit with seating, wooden table, and kitchenette on a 2018 Sea Ray 400.

Yacht Photos Pics The image shows the deck of a 2018 Sea Ray 400 with elegant wood flooring and seating.

Yacht Photos Pics The image shows the cockpit of a 2018 Sea Ray 400 with modern seating and controls.

Yacht Photos Pics Interior view of a 2018 Sea Ray 400 with a modern cockpit and panoramic roof.

Yacht Photos Pics The cockpit of a 2018 Sea Ray 400 with modern instruments and comfortable seating.

Yacht Photos Pics The bathroom of a 2018 Sea Ray 400 with a sink and toilet.

Yacht Photos Pics Interior of a 2018 Sea Ray 400 with cushioned seating and wood paneling.

Yacht Photos Pics Interior of a 2018 Sea Ray 400 with a large TV mounted on the wall.

Yacht Photos Pics Electrical control panel of the 2018 Sea Ray 400, embedded in a cushioned panel.

Yacht Photos Pics The image shows the stern of a 2018 Sea Ray 400 boat docked at a marina.

Yacht Photos Pics The image shows the cockpit of a 2018 Sea Ray 400 docked at a marina.

Yacht Photos Pics The image shows the cockpit of a 2018 Sea Ray 400 with elegant seating and wooden flooring.

Yacht Photos Pics Interior of a 2018 Sea Ray 400 with sleek seating and large windows.

Yacht Photos Pics The 2018 Sea Ray 400 features a well-equipped outdoor kitchen with a grill and sink.

Yacht Photos Pics Close-up of serial numbers on a 2018 Sea Ray 400 boat.

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Last updated Nov 4, 2026

40' Sea Ray 2018

Redefining the day-boat experience, the 2018 Sea Ray 400 SLX (The "Entertainer") combines massive entertainment spaces, cutting-edge technology, and overnight accommodations in a sleek, sophisticated package. Designed for host-minded boaters, this flagship bowrider offers ample social seating for you and all or your guests while delivering the performance and hull stability expected of a premiere yacht. Yacht certified, Engine hours 258.

Highlights & Key Features

Fold-Down Hydraulic Swim Terrace: Expands the aft cockpit beam into a sea-level beach club, creating a seamless connection to the water for swimming, lounge seating, and watersports.

Exceptional Social Layout: Features a massive bow seating area with dual sun loungers, an expansive L-shaped cockpit lounge, and a fully equipped wet bar with double electric grills, refrigerator, and sink.

Luxurious Air-Conditioned Cabin: Down below, the well-appointed cabin comfortably sleeps 4–5 adults across a forward convertible dinette/V-berth and a mid-berth stateroom, complete with a private head and enclosed shower.

Advanced Helm Tech: Dual Digital Dash with Simrad widescreen displays, Joystick Piloting for effortless docking, and integrated Axius/Skyhook position-holding systems.

Sleek Hardtop Protection: Dynamic hardtop with a canvas opening sunroof and an extended electric aft Sureshade for full sun protection on demand.

Why Choose MarineMax?

Choosing to buy with MarineMax means enjoying no-hassle financing and insurance, along with exceptional service available through online scheduling. Pair that with expert guidance through classes like Intro to Boating and Women on Water®, and you’re not just purchasing a boat; you're joining a community of passionate boaters.

Discover Endless Fun

Join us for boat shows, customer events, and Getaways!® trips that promise endless fun and adventure. Competitive trade evaluations make upgrading your lifestyle easier than ever.

Visit Monkey Island, OK, today and let the journey begin with the 2018 Sea Ray 400 SLX!

Denison Yachting - San Francisco is pleased to assist you in the purchase of this vessel. This boat is centrally listed by MarineMax Grand Lake.

Denison Yacht Sales offers the details of this yacht in good faith but can’t guarantee the accuracy of this information nor warrant the condition of this boat for sale. This yacht for sale is offered subject to prior sale, price change, or withdrawal from that yacht market without notice. She is offered as a convenience by this yacht broker to its clients and is not intended to convey direct representation of a specific yacht for sale.