Mariner 3400 Flybridge

Mariner 3400 "IN LIEU" - Turn-Key Flybridge Cruiser | REDUCED | Motivated Seller!

Exclusively listed with DBY Boat Sales, this outstanding Mariner 3400 represents exceptional value in today's market. Presented in immaculate, turn-key condition, "IN LIEU" is one of the finest examples of this highly respected model.

At the heart of this vessel are twin 260HP Mercruiser V8 petrol engines, which received a complete professional rebuild in late 2021 by Newport Marine Services. Since then, the boat has been barely used, showing less than 10 hours of runtime. All invoices are available and tell the story of a no-expense-spared overhaul.
A 2023 survey report confirms her excellent condition -- giving total confidence to the next owner. Anti-foul June 2025.

Built by Mariner Boats Australia (1986), the 3400 is renowned for its solid construction, generous beam (3.79m), predictable handling, and offshore capability. She cruises comfortably at 20+ knots, delivering a smooth, stable and responsive ride.
Light, Space & Entertaining

One of the standout features is the full-width sliding glass rear doors, which disappear neatly behind the flybridge ladder. This creates a seamless flow between cockpit and saloon, flooding the interior with natural light and making the boat feel remarkably spacious.
The modular cockpit furniture includes a two-seat aft sofa, creating an ideal entertaining area for family and friends.
Comfort for Extended Cruising

The interior offers true cruising comfort with:
o Two private cabins
o Forward cabin with large queen bed
o Guest cabin with two oversized single bunks
o Convertible saloon seating - sleeps up to six
o Separate enclosed shower in the head
o Midships galley with brand-new ENO gas stove
o Bright, airy saloon with large dinette to port
Well Equipped
o Quality bimini top
o Cockpit shade canvas
o Windscreen shade cloth
o Excellent overall presentation inside and out
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This is a rare opportunity to secure a fully sorted Mariner 3400 with fresh mechanicals and outstanding accommodation.
"IN LIEU" is ready to go and will not disappoint.
Call: Call Seller Email: Email Seller

Specifications:

Builder : Mariner Cruisers

Water (Potable) Capacity (l) : 380
Hull Construction Material : Moulded GRP
Deck Construction Material : Moulded GRP with non-skid

Country Origin : Australia

Length (feet) : 34 feet
Length (m) : 10.3 m
Beam/Width (m) : 3.79 m
Draft (m) : 0.8 m

Keel/Ballast : Integral to the hull moulding.
Dry Weight (kgs) : 8000 kgs
Number of Helms : 2

Colour : White

Engine Notes : Mercruiser - showing only 10 hours since full rebuild. Fresh water cooled petrol V8 engine.
Number Of Engines : 2
Engine Standard : Rebuilt
Engine Hours : 10
Horse Power (hp) : 260
Drive Type : Shaft
Number of Batteries : 4 2 x 12v engine cranking and 2 x 12v house.
Fuel Type : Petrol
Number of Fuel Tanks : 2 stainless steel
Fuel Tank Capacity (L) : 260

Propeller : 3 blade handed bronze propellers.
Steering System : hydraulic steering top and lower helm stations. Tiller arms.

Number of Toilets : 1

Number of TVs : 1

Stove : Brand new stove

Anchor / Winch : Galvanized plough anchor with galvanized short link chain. Muir 12v electric windlass.
Bilge Pump : 2 x 12v electric bilge pumps on automatic float switches. The shower sump is open topped and serves as a third pump.

Dinghy : No

Safety Gear : Yes
Has Navigation Lights : Yes
Radio : 2 x GME GX287 27 meg radios.
Number of Life Jackets : Several life jackets

Vessel Name : IN LIEU