What can be said about the 405 Conquest? It’s been called “the SUV of the sea.” It’s a capable offshore angler, a refined entertainer, and a comfortable overnight cruiser with a thoughtfully appointed cabin. Integrated, industry-leading technology—including the Fathom® lithium-ion power system for efficient, quiet onboard power and Simrad® AutoCaptain™ for automated short-distance maneuvers such as auto-docking, undocking, and close-quarters maneuvering —enhances the overall experience at sea. With up to 1,800 horsepower and a 41-foot cabin-cruiser design, the 405 delivers a well-balanced combination of performance, comfort, and fishability.
For boaters who don’t want to choose between a highly capable fishing boat and a highly versatile getaway boat, the 405 Conquest is a superior all-around vessel that delivers heightened experiences and more ways to connect with the outdoors. Plus, it has everything you need to spend the night onboard in total comfort.
Deluxe Wet Bar
Planning to entertain? The well-equipped wet bar lets you host a crowd with ease. Standard features include a refrigerator, sink, dedicated wine bottle storage and drawers, plus a convertible cockpit seatback that folds to reveal a grill and extra counter space.
Versatile Cockpit
Clever design gives you options galore: The starboard cockpit seat backrest converts to form extra counter/dining space; a cooler tucked into the port seat can be accessed two ways; and a highly customizable transom offers features for serious fishing or casual entertaining.
Convenient Galley
Meal prep is a breeze thanks to the galley’s array of essentials. You’ll find a stainless steel refrigerator/freezer, microwave, cooktop burner, freshwater sink, and wine glass holders and cabinets to keep you organized.
Leading Technology
The exclusive Simrad® AutoCaptain™ Autonomous Boating System enables stress-free docking, undocking and marina maneuvering. The Fathom® e-Power System, an advanced lithium-ion auxiliary 48 volt power system, delivers quiet, efficient, and engine-off operation of key onboard systems, enhancing comfort while reducing noise, vibration, and fuel consumption.
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405 Conquest
Specifications
Length Overall
41' 4"
Maximum Horsepower
1,800 HP
Persons Capacity
20
Beam
13' 6"
Bridge Clearance (with hardtop and radar)
11' 8"
Bridge Clearance (with hardtop and upper station)
20’ 9”
Bridge Clearance (with hardtop)
10' 5"
Bridge Clearance (with hardtop, radar and satellite TV)
14’ 8”
Bridge Clearance (with upper station and outriggers)
120-V receptacleAir-conditioning vents from main cabin (16,000 BTU unit)Carbon monoxide detectorFlooring and entry steps - solid teak with satin finishLighting - LED reading lights (2)Lighting - LED RGB diffused courtesy lighting with dimmer controlLighting - LED white overhead lights with dimmer switches (1 in main area, 2 in bed area)Mattress - 6” thick Premium Handcraft® pillowtop innerspring with hinged access to storagePrivacy curtainStorage - hanging locker (cedar lined) with removable shelves and galley dish storage with door activated lightStorage - large storage compartment under the mattress with a powered access hatch, providing easy access to storage drawers and large molded in fiberglass trunkVimar single USB receptacleMid berth comes with fitted sheet, comforter and two regular size pillowcases
Deck/Cockpit
10” stainless steel cleats - stern cockpit with gunnel boats hawse pipe (2), anchor locker (1)10” stainless steel pull-up cleats - bow (2), spring line (2), crosstie cleats at transom (2)27” interior freeboardAcrylic transom door with stainless steel latchAnchor windlass with 400’ rode and chain (handheld remote control, stainless steel swivel, polished stainless steel 44lb anchor, polished stainless steel bow roller davit)Boarding ladder at transomBow eye (heavy duty polished stainless steel)Chrome Boston Whaler logo/model designatorCoaming bolsters (cockpit)Dive door (molded fiberglass boarding door on port side with removable stainless-steel dive ladder with dedicated storage in stern seat)Drink holders (stainless steel) (4 in bow, 2 in hawse pipes, 2 at helm, 2 at port console, 2 at port lounge, 2 per side in recessed pockets at aft helm deck seats)Lighting - LED courtesy lights in cockpit (multi-color)Livewell (19-gallon) (pressurized insulated in aft port corner with clear lid, blue interior and dual white LED lights)Rails - hand rails (welded stainless steel) (companion way to helm deck and into cabin, boarding ladders and prep station)Rails - high bow rails (welded stainless steel)Rails - rub rail (white with stainless steel insert) (heavy-duty)Rails - toe rails (cockpit) (stainless steel) (under gunnel storage shelf with downrigger weight holders - 1 per side)Rod holders (gunnel-mounted) (3 aft cockpit starboard) (2 port)Rod holders (transom-mounted) (5)Rod holders (under gunnel) (2 starboard)Self-bailing cockpit soleShower (freshwater with hot and cold water) (near dive door)Shower (freshwater with hot and cold water) (near transom door)Spotlight (ACR RCL-75) (mounted on hardtop)
Enclosed Head Compartment
120-V receptacle at vanityDual entrance (from cabin and from master stateroom)Flooring - solid surface flooring in the shower and solid teak flooring on the vanity areaLighting - LED overhead light (2) with dimmerLighting - LED RGB diffused courtesy lighting with dimmer controlMirror - full length (located on acrylic stateroom access door)Opening port lightRails - handrail (stainless steel )Shower - enclosed shower with rain head and hand-held sprayer with hot and cold faucet and bi-fold acrylic shower dividerShower sumpSkylight (frosted glass)Toilet paper holder inside vanityTowel ring and barTrash chute in counterVacu-Flush® toilet (electric), holding tank with vent filter, overboard discharge, dockside pump-out, tank full indicator alert and progressive tank level indication integrated into digital networkVanity storageVanity with ceramic vessel sink and polished chrome faucetVentilation (forced air)
Galley
120-V receptacleCabinet - overhead with AC and DC vessel system controlsCabinet storage - behind sink providing additional storage for galley suppliesCabinet storage - for dishesCabinets - teak wood, satin finish with maple lining located under counter and over galleyCooktop burner (single)Countertop with faucet and undermount sink (solid surface)Lighting - LED RGB courtesy lighting under overhead cabinet and countertop with dimmer controlLighting - LED white light overhead (1)Microwave - in overhead cabinetPullout out waste receptacle in cabinet under galley counterRail - handrail (stainless steel)Refrigerator/freezer - drawer, stainless steel 12-V/120-V (3.0 cubic feet) CR85Sink filler - solid surface matching countertop with integral cutting boardWine glass holder’s underside of cabinet with lighting (6)
Helm Console Starboard-side Layout
16” SIMRAD NSO EVO3S ELECTRONICS / DUAL NAVIGATION PACKAGE
Dash surface – custom black acrylic integrated with switch panels and flush mounting of dual displays, Simrad NSO evo3S 16” screen (GPS, Chart Plotter, Fishfinder), Simrad NSO evo3S 16” screen (Additional Display)(CHIRP, SideScan, DownScan), Integrated Mercury VesselVIew Link, Simrad RS40 VHF Radio with AIS and HS40 wireless handset, GS25 GPS Antenna 15 N2K with Heading Sensor, Simrad S5100 1kw Dual channel CHIRP Sounder Module, Airmar 1000 watt recessed thru hull Dual channel CHIRP transducer (B275LH-W), StructureScan 3D transducer included)
A/C unit (16K BTU) with 2 helm vents and wetbar area ventElectronics mounting surface with space for dual 16" or dual 19" Simrad displaysCompass (with lighting)Defogger system (port and starboard) (120v heater with blower )Display - 7 color LCD touch screen system monitor and control centerDrink holders - stainless steel, extra deep (1), standard depth (1)Electrical switch panels with stainless-steel push-button switches and illuminated textFootrest molded into console with solid teak steps with satin finishMercury® DTS dual binnacle controls with integrated engine trim controls (single remote ignition key switch in cabin with pushbutton start/stop located at the helm)Rails - grab rail (stainless steel)Spotlight controlSteering wheel - cast stainless steel with knob and tilt helmStorage recess on top of dash with (1) dual USB and (1) 12-V wireless cell phone charging holder
Master Stateroom/Forward Berth
120-V receptacle (port and starboard)Air-conditioner (8,000 BTU) reverse cycle with LCD ControlBed - island bed with trunk style front storage access (gas assist hatch), 8” thick Premium Handcraft® pillowtop innerspring mattress with electrically actuated hinged backrest, fitted sheet, comforter and pillowcases (2 regular-size)Cabinets overhead on port and starboard side with flip up doorsCarbon monoxide and smoke detectorsDoor - sliding pocket door separating the stateroom from salonFlooring and entry steps - solid teak with satin finishLighting - LED overhead lights (4)Lighting - LED overhead reading lights (2)Lighting - LED RGB diffused courtesy lighting with dimmer controlOpening hatchService access to A/C unit (through forward bulkhead) and bow thruster (through the floor)Storage - hanging locker with cedar lining with door activated light (starboard side)Storage - locker with cedar lining with door activated light and shelves (port side)TV - 24” flat screen HDTV with Apple TV IntegrationVacuum - Dyson V7 handheld with charging holderVimar overhead light switch located on starboard nightstandVimar single USB receptacles on port and starboard nightstandsWindows with pull down pleated shades (hull-side)
Materials/Cabin
Cabinets - teak wood with satin finish with maple and cedar liningCounter tops - Lava Rock CorianFlooring and entry steps - teak with satin finishSeating upholstery material - Ultraleather Dwell SandpiperTable (dinette) - teak high glossWall accent panels covered in Miami Trackstar Dove with Brushed Gold accents
Materials/Cockpit
Counter tops - Lava Rock CorianUpholstery Material – two tone Omnova Sof Dura Stone/Spradling Diamante Ivory
Materials/Forward Berth
Cabinets – teak wood with satin finish with maple and cedar liningFlooring – Solid teakWall accent panels covered in Miami Trackstar Dove with Brushed Gold accentsSide shelves – Lava Rock CorianComforter/Duvet – Calcite Steel, custom fit to mattress
Materials/Head
Cabinets – teak wood with satin finish with maple liningDoor – teak wood with satin finishFlooring in head – solid teakFlooring in shower – Lava Rock CorianSeating in shower – solid teak with satin finishCounter tops, vanity and shower - Lava Rock Corian
Materials/Mid-Berth
Cabinets – teak wood with satin finish with maple and cedar liningFlooring – Solid teakWall accent panels covered in Miami Trackstar DoveComforter/Duvet – Calcite Steel, custom fit to mattress
Mechanical (Aft Bilge)
300 V8 DTS Quad Mercury Black Verado with Joystick Piloting. Outboard docking system with joystick, electronic steering, and electronic remote control (ERC)Battery trays for (4) group 31 engine batteries with advanced battery management system and in-cabin electric switches and charging relays with remote parallelingBilge pump - high water bilge pump with alarm (2000 GPH)Bilge pumps - automatic (300 GPH forward, 2000 GPH aft)Engine fuel / water separators (4)Freshwater pullout hot and cold shower (2) located at dive door and transom doorFreshwater washdown - stainless steel faucet located in cockpitGenerator (diesel 12kW Fischer Panda) - 240-V 60 Hz with fire suppression system, automatic with manual overrideHorn - electric dual polished stainless-steel trumpet hornsInlet - 50-amp shore power inlet with battery chargers, isolation transformer and 50’ shore power cordInlet - dockside cable TV inlet with low profile digital antenna on hardtop and boost control in cabinLighting - LED cockpit and machinery space lightingPropellers (stainless steel)Raw-water washdown - stainless steel faucet located in cockpitSwitch panel - livewell pump/lighting and fish boxesThru hulls - bonding system for underwater thru hull fittingsThru hulls - cast bronze thru hulls (below waterline)Thru hulls - cast stainless steel thru hulls (above waterline)Transducer pocket in hull bottom for flush mounting a B275 transducerTrim tabs - recessed electric trim tabs with indicators (Auto Glide, Dynamic Running Surface, dual ram)
Open Windshield/Hard-Top System
Canvas (side and aft rigid Makrolon® polycarbonate weather enclosure from door to cockpit) (with storage in aft portion of hardtop) (white or black depending on frame color selection)Custom painted integrated aluminum hardtop/windshield frame (white or black depending on frame color selection)Deck hatches - with opening integrated into hardtop (2)Handhold along hardtop for egress to foredeckLadder access to hardtop (white or black depending on frame color selection)Lighting - LED blue companionway light (2) at helm deck step and cabin entry steps (turned on via solar sensor)Lighting - LED blue/white overhead lights; (3) across aft end of hardtop (2) mid over Wet Bar and seating, (1) forward centerLighting - LED flood lights at cockpit (2) and bow (1)Lighting - LED navigation lights (stainless steel) (recessed in hardtop)Lighting - LED red/white map overhead light (1)Outrigger readyRod holders on port and starboard ladder supports (6) (white or black depending on frame color selection)Side glass (open tempered)Sunshade (cockpit) (telescoping polished stainless-steel frame retracts and deploys electrically) (black Sunbrella® canvas)Windshield - full height, single piece front tempered glass providing unobstructed visibility, with dual electric actuated vents and independent controlWindshield wipers - (2) pantograph, with intermittent wash system
Port Cockpit Prep & Entertainment Area
Flip up footrest for aft facing 2-person mezzanine seatInsulated 220qt built-in cooler/storage under aft port seating with dual access
Port Lounge and Console
A/C unit (12K BTU) (with 2 vents on dash and seating area vent)Acrylic/glass dashDrink holders - stainless steel (2)Dual helm seat with arm rests that convert to create a large sun lounge areaRail - grab handleStereo remote control - Bluetooth remoteStorage - glovebox style with (1) dual USB and white LED lightStorage recess on top of dash with (1) dual USB and (1) 12v wireless cell phone charging holderTable - teak (high gloss with polished stainless-steel inlay, aft lounge area with electric high low conversion)
Seating
Bow lounge with dual row tilt up backrests (includes canvas cover)Foldaway stern bench seat with elevated backrestHelm seat (fore and aft electrical adjustment with swivel )Port aft facing seat (2-person seat that can convert to a lounge/filler cushion over the lowered table)Port console seat (2-person, forward facing with innovative mechanism to convert to an aft facing lounge)Port forward facing seat (2-person seat with conversion seatback for aft facing mezzanine seat)Starboard aft facing (2-person mezzanine seat that folds down providing a countertop at the prep station)
Standard Equipment
All hardware 316-L Stainless SteelAll rails welded 316-L Stainless SteelVinylester barrier coat over entire hull and hull sides
Starboard Cockpit Prep/Entertainment Center
Additional solid surface countertop available in prep area when aft facing seatback is folded downPull-out footrest for aft-facing Mezzanine seatingPull-out prep area with solid surface counter (when hinged up reveals an electric grill and storage compartment)
Starboard Helm Deck Wet Bar
120-V receptacleCountertop - solid surface with hinged, deployable extension, integrated into cockpit seat backrestHandrail (stainless steel)Refrigerator - stainless steel, dual voltage 12-V / 120-V, 2.3 cubic ft.Sink - with filler cutting board (fiberglass) (hot and cold water)Storage - drawer/ box compartment on aft wall under the counterStorage - pullout 3 drawer storage compartment under counter, forward of the refrigerator (replaced by refrigerator, freezer or ice maker options)Storage - wine rackWood accents (Zebra wood faced accent surface)
Stereo/Infotainment System
Stereo System (JL Audio integration into Simrad Navigation Package)- JL Audio MM105-HR stereo with dash mounted remote volume/mute knob into acrylic dash.USB audioAM/FM/HD RadioSirius XM-readyIphone/Android compatible via integrated Bluetooth 5.0Helm Deck - JL stereo speakers M6 7.7” coax classic white/gun metal grill (2) on port and starboard consoles reflecting off the windshield, JL stereo speakers M6 7.7” coax classic white/gun metal grill (2) in aft part of hardtop, JL subwoofer M6 10” subwooferBow - JL M6 6.5” coax classic white/Gun metal grill in bow lounge areaCockpit - JL 7.7” coax classic white/Gun metal grill (2) in aft cornersCabin Main Area - JL Audio MM50 Stereo Head unit with Aux in for TV audio integration, JL C2-400X speaker (2) enclosure system, TV, 32” flat screen LED HDTVCabin Forward - Stereo JL Audio MM50 AM/FM, MP3/USB inputs, and Bluetooth compatible source unit with Aux in for TV audio integration, 24” flat screen LED HDTV
Storage
Bilge - aft mechanical space, large storage tray (deleted with gyro)Cabin galley - upper, mid and lower cabinets at galleyCabin main - cabinets above starboard setteeCabin main - in-floor storage compartmentCabin main - storage under starboard setteeCockpit - downrigger weight holders (2)Cockpit - insulated 220qt built-in cooler/storage under seating with dual accessCockpit - rod holders under starboard gunnel (2) (deleted with foldout bench seat option)Cockpit - storage below pullout grillFishboxes - insulated in-deck with pump-out (2) (290 quarts each)Guest mid-berth - large storage compartment under berth with pull out drawersGuest mid-berth - port side cedar lined hanging locker with removable shelves, dish storage and lightGuest mid-berth - port side storage under hinged countertopHead - storage cabinet under sink and overheadHelm deck - portside console glovebox and forward storage trayHelm deck - starboard helm storage drawers and forward storage trayHelm deck - starboard wet bar storage drawers and storage compartmentMaster stateroom forward - large storage compartment under berthMaster stateroom forward - port and starboard upper side cabinets forwardMaster stateroom forward - port side vertical cabinet with shelves and lightMaster stateroom forward - starboard side cedar-lined hanging locker with light
Theft Deterrent System with Remote Connectivity
Anti-theft feature immobilizes enginesWhaler Watch mobile appFirst Mate Safety & Security System – Quad or Triple Engines (Includes Captain FOB and 3 passenger FOB’s)Telematics tracking system with GeoFence notificationRemote monitoring and notification of high-water bilge alarm, tank levels, batteries, shore power connections and propulsion system information
Exterior Color Type
Gelcoat FinishPainted Finish
Exterior Color
Horizon BlueTectonic SilverJadestoneSteel BluePlatinumSand MetallicFighting Lady YellowIce BlueWasabiAbaco BlueOyster GreyWhite
Graphic Colors
Red graphicsBlack graphicsWhite graphicsSilver graphicsBlue graphics
Interior
Rosewood interior package
Frame Color
White FrameBlack Frame
Tops & Towers
Upper station with JPOUpper Station Flybridge w/ Triple V12Hardtop with electric sunroof
Hardtop Underside Color
Abaco BluePlatinumHorizon BlueSteel Blue
Helm Deck Enclosure
Full Enclosure and Hardtop System
Triple Engines
600 V12 DTS Black Triple Mercury Verados with Joystick Piloting600 V12 DTS White Triple Mercury Verados with Joystick Piloting
Quad Engines
425 V10 DTS Quad White Mercury Verado with Joystick Piloting425 V10 DTS Quad Black Mercury Verado with Joystick Piloting300 V8 DTS Black Quad Mercury Verados with Joystick Piloting300 V8 DTS White Quad Mercury Verados with Joystick Piloting
Painted Engines
Painted engines (for quad engines)
Helm Seating
Teak Seat BacksUpper Station Teak Seat Backs
Additional Seating
Seating- cockpit foldout bench seat (strbd)
Railings and Rub Rails
Black Rubrail With Stainless Steel InsertRails - split bow rail
Entertaining Features
Refrigerator at helm deck wet barCooktop (single burner)Freezer at cabin setteeSummer kitchen - with refrigerator drawerSummer kitchen - with freezer drawerRefrigeration chiller (120V) Refrigeration chiller (230V)Freezer at helm deck wet barTables - aft cockpit solid teak tablesSummer kitchen - with storage
Fishing Features
Rod storageRefrigeration chiller w/dual fishbox (120V)Refrigeration chiller w/dual fishbox (EU 230V)Upper Station Center OutriggerOutriggers - premium radialUpper Station OutriggersDeluxe prep center with livewell
Seating
Cockpit slide out seat
Notable Options & Accessories
Inflator PumpLight BarRemote Mast Light/Antenna PowerbaseShorepower ReelBattery Package (for quad engines)Water delivery with V12 600 at manufacturing plantWater delivery with flybridge and V12 600 at manufacturing plantFlooring - cockpit teak wood flooringEngine flushing systemCommissioning kitHardtop Storage RackGenerator (diesel) (15kW)Bow ThrusterWater delivery (with JPO)Water Delivery w/ Upper Station and JPOFender Hangers - stainless steel (6)Port light in hull side windows (3)Heater system - dieselBattery Package (for quad engines with JPO)Full side glass helm deck enclosureAnchor windlass chain (300 feet)12-V receptacles (at transom)Seakeeper 6 Gyroscopic StabilizerLighting - underwater LED (blue)Dive tank holders (4)Boston Whaler dishware setWater Delivery w/ Upper StationWater delivery at manufacturing plantBattery package JPO - for triple enginesWater delivery with V12 600 at manufacturing plant
We can tell you how innovative and industry-leading our products are, but don't take our word for it! Learn what others have to say in these third-party reviews.
* Speed determined by GPS. Fuel consumption based on total usage by the engines. MPG computed from MPH & GPH. Range based on 90% of total fuel capacity.
** The performance data shown should be considered valid only for the specific boat whose serial number is shown and on the date this test was performed. Many factors may affect the actual performance of this boat or of similar boats. Such factors include, but are not limited to, installation of certain options such as towers and hard tops, vessel loading and trim, weather and sea conditions, engine condition, propeller condition, and hull bottom condition. Boston Whaler makes no guarantee whatsoever that this performance will be repeated on this boat at a later date or at any time on a similarly equipped boat.