2021 Boston Whaler 405 Conques Boat in Quincy, MA 02169 US

$840,000

Used
builtBuilt in 2021
Year the boat was built
model

405 Conques

Boat model
engine

4 Engines (4x Mercury)

Engine type and count
length

40 feet

Overall boat length
fuel

Gas

Fuel type
material

Fiberglass/Reinforced

Hull material
Nominal Length
40ft
Length Overall
40ft
Beam
13.5ft
Dry Weight
27268lb
Cabins
2
Heads
1
Fresh Water Tanks
90gal
Fuel Tanks
620gal
Holding Tanks
30gal
Hull Material
fiberglass
Engine 1
Engine Make
Mercury
Engine Model
Verado V8
Total Power
300hp
Engine Hours
450
Engine Type
outboard
Fuel Type
gasoline
Engine 2
Engine Make
Mercury
Engine Model
Verado V8
Total Power
300hp
Engine Hours
450
Engine Type
outboard
Fuel Type
gasoline
Engine 3
Engine Make
Mercury
Engine Model
Verado V8
Total Power
300hp
Engine Hours
450
Engine Type
outboard
Fuel Type
gasoline
Engine 4
Engine Make
Mercury
Engine Model
Verado V8
Total Power
300hp
Engine Hours
450
Engine Type
outboard
Fuel Type
gasoline
Summary
ONE OWNER SINCE NEW, ALWAYS KEPT IN THE NORTHEAST. ONLY 450 ORIGINAL HOURS. STARLINK & NIGHT VISION. FULLY SERVICED & READY FOR IT'S NEXT OWNER! THIS BOAT WILL NOT DISSAPOINT.
Generators
Generator 1
Make
Fischer Panda
KW
0
RPM
0
Hours
326
Date Hours Recorded
07/13/2026
Detail
Fischer Panda, 326 hours

Price History

DateEventPrice
7/27/26Initial price$840,000

Contact Southpaw Yacht Sales

7 River Road, Suite 7B, Cos Cob, CT, 06807

Boston Whaler 405 Conques: BoatTEST Review

Reviewed by Jeff Hammond

Boat Test Review on BoatTest.com

Overview

The Boston Whaler 405 Conquest represents the largest model in the Conquest lineup, designed with versatility in mind to accommodate families who enjoy both fishing and cruising. This model offers customizable features that cater to a dual-purpose lifestyle, blending comfort and functionality seamlessly.

Cockpit and Exterior Features

The cockpit of the 405 Conquest measures 11 feet 3 inches wide by 6 feet 6 inches fore and aft, offering a spacious and adaptable area. The standard layout includes a flip bench seat at the stern, while an optional summer kitchen replaces this with an electric grill, stainless steel rail, drawer-style refrigerator, sink, and multiple beverage holders. Storage is thoughtfully integrated, including dedicated spaces for a five-gallon bucket and cockpit tables, which Boston Whaler terms 'point-of-use storage.' For anglers, an optional aquarium live well can substitute the summer kitchen, with kitchen features relocated forward under the lounge. Additional fishing amenities include a 19-gallon live well in the aft port corner, rod holders, hawse pipes, racks for downrigger balls, and a first-in-class port side hull dive door with a heavy-duty stainless steel latch for hauling large fish or launching divers. The cockpit also features low-pressure glycol-filled cooling tubes for the 290-quart fish boxes, enhancing ice retention. Comfort and convenience are addressed with an optional 7-foot long sure shade, multiple rod holders on the hardtop, aft-facing lounge seats with beverage holders, a cooler with dual access, a pull-out shower, and wide passageways with secure rails leading to the foredeck. The foredeck itself boasts a 70-inch long by 58-inch wide sun pad with adjustable headrests, cup holders, grab rails, stereo speakers, and USB plugs.

Helm and Cockpit Galley

Access from the cockpit to the helm deck is facilitated by 9-inch tall steps with a 28-inch wide space between seats. The helm features a single-person seat that slides on a power base, with armrests and bolsters that fold up and a swivel function allowing the captain to engage socially when docked. The cockpit galley includes a Corian countertop, a single Kenyan burner, a sink with a fold-up faucet and removable cover, along with ample storage through drawers, cabinets, and a drawer-style refrigerator. The helm windshield is equipped with Boston Whaler's patented power vents and offers an optional full glass configuration. Additional features include overhead spreader lights, outrigger handles, speakers, courtesy lights, and a soft zipper pocket for storing the cockpit enclosure. An optional power skylight replaces standard hatches to enhance natural light.

Interior Living Spaces

The cabin provides six feet two inches of headroom and begins with a private bow stateroom, a highly requested feature in this size class. The sliding cabin hatch is uniquely designed with an articulating lower section to accommodate the hull's V-shape, a patented innovation by Boston Whaler. The bow berth, centered on the boat's axis, measures 80 inches long by 58 inches wide, with steps on either side. It includes adjustable head positioning for reclining to watch a 24-inch TV and stereo system located aft to port. Storage is abundant, with a cedar-lined hanging locker to starboard, a cedar-finished closet with shelves to port, and a large berth base that opens on gas struts for storing sizable items such as a life raft or luggage. A Dyson vacuum cleaner is standard and stored in the bow locker.

Heads and Additional Cabin Features

The private head compartment is accessible both from the master stateroom and the salon, featuring a separate shower area with a rainfall showerhead and a pull-up wand. The showerhead is designed to be recessed into the overhead in future models. The head also includes a vessel sink with Corian countertops, a skylight, and an opening port for ventilation. The salon area benefits from overhead skylights and hull-side windows that provide ample natural light. The dinette table folds to allow easy access and lowers to create additional sleeping space suitable for one adult or two children. Entertainment is supported by a stereo and a 32-inch TV, while controls for cooling, fish boxes, water maker, Sea Keeper, TV antenna gain, and air conditioning are discreetly housed behind overhead cabinet doors.

Galley and Aft Cabin

Located to port of the cabin steps, the galley is equipped with a single burner stove and a sink set in a Corian countertop, complemented by overhead storage and glass and beverage holders. Below the sink, an Isotherm refrigerator and a wastebasket are integrated. Above the galley, a cedar-lined locker offers additional storage with various shelves and compartments. The aft cabin features an 82 by 55 inch mattress that raises on a power assembly to reveal substantial storage beneath. Optional overhead racks can accommodate up to six fishing rods, enhancing the boat's utility for anglers.

Conclusion

The Boston Whaler 405 Conquest combines versatile cockpit and helm deck arrangements with comfortable and well-appointed interior accommodations, making it well-suited for family adventures on the water. Its thoughtful design caters equally to fishing enthusiasts and cruising families, while performance capabilities with Quad 400 Mercury outboards are detailed in a separate review. Overall, the 405 Conquest exemplifies Boston Whaler's commitment to quality, innovation, and multifunctional use.

Rating: 4.3 out of 5

Overview from around the web 2021 Boston Whaler 405 Conques

Customers have been highly enthusiastic about the 2021 Boston Whaler 405 Conquest, praising its exceptional combination of comfort, performance, and versatility

Boat enthusiasts have noted that its spacious layout allows for entertaining guests while providing ample storage for gear. The sleek design and impressive offshore capabilities have also garnered positive feedback, with many highlighting its reliability and smooth handling in various sea conditions. Users are particularly impressed with the state-of-the-art technology features, including advanced navigation systems and intuitive controls, which enhance the overall boating experience. The cabin's luxurious amenities and thoughtful design elements make it a favorite among those who appreciate both leisure and adventure on the water. Overall, the 2021 Boston Whaler 405 Conquest has received accolades for its ability to cater to both fishing aficionados and families looking for a comfortable cruiser, solidifying its reputation as a top choice in the boating community.

The Biggest Pros and Cons

Pros

Exceptional Stability: The 405 Conquest is built with a deep-V hull design that offers impressive stability and a smooth ride, making it suitable for both calm and rough waters.

Versatile Layout: The spacious cockpit and well-designed cabin provide flexibility for both fishing and entertaining. It features ample seating, a fully equipped galley, and a comfortable helm area.

Advanced Technology: Equipped with the latest navigation and entertainment systems, the 405 Conquest includes digital displays, smart controls, and premium sound systems for an enhanced boating experience.

Built to Last: Boston Whaler is known for its construction quality and durability. The 405 Conquest is no exception, featuring a foam-filled hull and corrosion-resistant hardware that ensure longevity.

Performance: With powerful outboard engines, the 405 Conquest accelerates quickly and offers excellent fuel efficiency, making it a great choice for long trips.

Comfortable Accommodations: The cabin includes a private head, sleeping quarters, and climate control, allowing for comfortable overnight excursions.

Cons

Price Point: The 405 Conquest comes with a relatively high price tag, which may not be suitable for all budgets.

Size: While its size provides stability and comfort, maneuvering in tight spaces can be challenging, particularly for less experienced boaters.

Maintenance Costs: Like any high-performance yacht, maintenance and servicing can be costly, requiring a dedicated budget for upkeep.

Fuel Consumption: Despite its efficiency, the dual outboard engines may lead to higher fuel costs during extensive use compared to smaller boats.

Steering Sensitivity: Some users report that the steering can feel sensitive at higher speeds, which may require some time to adjust for new captains.

Made For

The 2021 Boston Whaler 405 Conquest is designed for those who seek adventure without compromising on comfort and style. This robust vessel is perfect for serious anglers, weekend cruisers, and families alike. With its spacious cockpit, premium amenities, and advanced technology, it caters to individuals who appreciate high performance and versatility on the water. Fishing enthusiasts will find the 405 Conquest equipped with plenty of rod holders, live wells, and ample storage for gear, ensuring an unforgettable day on the waves. Meanwhile, families can enjoy the roomy cabin with comfortable seating, a well-appointed galley, and multiple sleeping quarters, making overnight trips a breeze. For those who value safety and stability, this model boasts Boston Whaler's legendary unsinkable construction, allowing for peace of mind during every journey. The 2021 Boston Whaler 405 Conquest truly meets the needs of those who demand both adventure and luxury in one impressive package.

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 2021 Boston Whaler 405 Conques. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Saltwater Fishing cost in today's market, or how much does a Boston Whaler cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
$
$
510152025
%
Principal Loan Amount$ 714,000
Total Payment$1,276,605.48
Monthly payment
$5,319.19/mo

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 2021 Boston Whaler 405 Conques. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Saltwater Fishing cost in today's market, or how much does a Boston Whaler cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
$
$
510152025
%
Principal Loan Amount$ 714,000
Total Payment$1,276,605.48
Monthly payment
$5,319.19/mo

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Meet the Broker

Address

7 River Road
Suite 7B
Cos Cob, CT 06807
Other Information about Southpaw Yacht Sales

Southpaw Yacht Sales is a full service yacht broker with an unwavering focus on our customers' best interests. Purchasing a yacht or boat entails several intricate and sometimes complex steps, but we have the vast experience and connections needed to make the process easy and fun. We provide assistance with every step of the transaction from documentation to cleaning and delivery. There is a difference between simply buying a yacht and receiving unparalleled assistance throughout the whole process - that difference is Southpaw Yacht Sales. We are located in Greenwich, CT.

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