Maxum 4600 SCB

A spacious planning motor cruiser the Maxum 4600SCB OCEAN CHALLENGE offers accommodation for 4 over two cabins, both with en-suite heads. The galley is located within the deckhouse, featuring all-electric appliances and open plan to the saloon. The saloon is open plan with seating to starboard and storage along the port side with a sliding door opening out the aft cockpit.

OCEAN CHALLENGE came ashore at the end of 2025 and is offered for sale ashore, her inventory highlights include:

Original gelcoat finish to topsides and coachroof
Tek Deck synthetic teak decking to finish foredeck, flybridge, flybridge steps cockpit and bathing platform (2015)
Cummins 450C marine diesel engines, 430hp each
Vetus 4.7kW tunnel-mounted bow thruster
Westerbeke 9.4KvA marine generator set
Raymarine EVO autopilot system
Raymarine e95 MFD chart plotter / radar on flybridge
Raymarine e97 MFD chart plotter/radar in wheelhouse
Raymarine ST60+ navigation instruments
Icom IC-M411 DSC VHF
Icom IC-M423G
Raymarine AIS650
Ceramic Induction Hob (2015)
Neff built-in, combi oven. (2015)
Vitrifrigo stainless steel domestic, front-opening drawer style fridge freezer (2015)
Diesel-fired, 5 kW blown-air heating system
Marine Air Systems, reverse cycle air conditioning systems for forward cabin and saloon
Deck Crane mounted on bathing platform
Lewmar electric with push button controls on fordeck and secondary control switches at both helm stations

OCEAN CHALLENGE is available for immediate viewing by appointment in Rhu Marina, near Glasgow.

CONSTRUCTION

Hull Construction:
Single-piece GRP moulded hull with chimes and sprayrails
Hull incorporating bathing platform aft
GRP laminated internal structural members
Original gelcoat finish to topsides
Underwater hull finished in black antifouling

Deck & Superstructure Construction:
GRP moulded deck incorporating coachroof and superstructure with self-draining cockpit
GRP moulded flybridge
Original gelcoat finish to moulding
Tek Deck synthetic teak decking to finish foredeck, flybridge, flybridge steps cockpit and bathing platform (2015)

MACHINERY

Port Engine & gearbox:
Cummins 450C marine diesel engine
430hp @ 2,600rpm
8.3 ltr in-line, 6-Cylinder, 4-stroke diesel, turbocharger and aftercooled.
Indirect engine cooling
Twin Disc hydraulic reversing marine gearbox
Twin lever hydraulic engine control system, dual station

Starboard Engine & gearbox:
Cummins 450C marine diesel engine
430hp @ 2,600rpm
8.3 ltr in-line, 6-Cylinder, 4-stroke diesel, turbocharger and aftercooled.
Indirect engine cooling
Twin Disc hydraulic reversing marine gearbox
Twin lever hydraulic engine control system, dual station

Maintenance & Performance:
Engines fully serviced including new belts and impellors Autumn 2024, boat used for only a few hours in 2025
Port Engine Hours – 1371.1
Starboard Engine Hours – 1371.7
Cruising speed 19kts
Maximum speed 23kts
2.5mpg @ 1,100rpm, giving 9.5kts and a range of 150miles approximately

Propulsion & Steering:
Stainless steel propeller shafts
Bronze P-Brackets
Bronze propellers
Propellers refurbished and balanced in 2024
Bronze rudders
Dual station hydraulic steering system

Bow Thruster:
Vetus 4.7kW tunnel-mounted bow thruster
Push button control panels at both helm stations

Generator:
Westerbeke 9.4KvA marine generator set
9.4KW @ 1500RPM
Westerbeke 4-cylinder marinised diesel engine
Remote control panel at ships switch panel

Autopilot:
Raymarine EVO autopilot system
Raymarine P70R control heads at both helm stations
Raymarine ACU400 Actuator
Raymarine hydraulic pump drive unit

Trim Tabs:
Bennett electro-hydraulic trim tabs
Control panels at both helm stations

ELECTRICAL SYSTEMS

Voltage systems:
12VDC onboard power supply
230VAC shore power supply

Shore Power:
Extension lead to connect to shore supply
Single connection point
RCD-protected, hard-wired system
Ring main, battery charger and water heater

Battery Banks:
Port Engine / Generator – 1x 12VDC, 210Ah, lead acid
Starboard Engine - 1x 12VDC, 210Ah, lead acid
Domestic - 1x 12VDC, 220Ah, lead acid
Bow Thruster Batteries – 2x 12VDC, 105Ah lead acid

Charging:
Charger #1 – Guest Charge Pro, 230VAC-12VDC, 30amp, charging both engine batteries
Charger #2 – Victron Energy Blue Smartt charger, 230VAC – 12VDC, 30amp, charging domestic batteries

Other Electrical:
Searchlight – with remote control panel at lower helm station
Windscreen Wipers – Wipers on three forward looking windows, independent switching for each wiper
De-Mister – Electric blower type de-mister fans for all three forward looking windows
USB charging sockets in saloon and at helm station

PLUMBING & GAS SYSTEMS

Fresh Water:
Pressurised hot and cold water systems
Mixer tap in galley
Mixer taps in both heads
Dedciated shower fittings in both heads
Mixer tap at flybridge wash hand basin
Hot water provided from calorifier heated from engine cooling water or immersion heater

Black Water:
Single holding tank
Discharging overboard by electric macerator pump
Deck suction discharge

Bilge Pumps:
Forward Bilge Pump – Electric pump with manual and auto switching
Midship Bilge Pump – Electric pump with manual and auto switching
Aft Bilge Pump – Electric pump with manual and auto switching

TANKAGE

Fuel:
Twin diesel tanks located to port and starboard
Alloy tank constructions
Approximate capacity of each tank 790ltrs
Approximate total capacity – 1580ltrs

Fresh Water:
Single water tank
Approximate total capacity – 378ltrs

Holding Tank:
Single holding tank
Capacity unknown

NAVIGATION & COMMUNICATION EQUIPMENT

Flybridge:
Plotter/Radar – Raymarine e95 MFD with chart plotter and radar functionality
Depth/Speed/Log – Raymarine ST60+ TriData display
Radar – Raymarine Digital HD 24kw open array scanner
Magnetic Compass

Lower Internal Helm Station:
Plotter/Radar – Raymarine e97 MFD with chart plotter and radar functionality
Depth/Speed/Log – Raymarine ST60+ TriData display
Magnetic Compass

Communications Equipment:
Lower Helm VHF – Icom IC-M411 DSC VHF
Flybridge Helm VHF – Icom IC-M423G
AIS – Raymarine AIS650

DOMESTIC EQUIPMENT

Galley:
Cooker – Ceramic Induction Hob (2015)
Oven – Neff built in, combi oven. (2015)
Fridge/Freezer – Vitrifrigo stainless steel domestic style, front-opening draw style, lower drawer acting as freezer (2015)
Ice Maker – Mounted beneath saloon countertop

Heads:
Starboard Toilet –Jabsco electric flush marine toilet
Forward en-suite heads - Sani Marin SFA electric marine toilet
Wash hand basins with mixer taps in both heads
Dedicated shower fittings in both heads
Compact bath in forward cabin en-suite

Heating:
Diesel-fired, 5 kW blown-air heating system
Single outlet in saloon
Thermostatic cabin control in saloon

Air Conditioning:
Reverse cycle air condition systems for forward cabin and saloon
Marine Air systems VRP16KZ50, 16,000BTU x2
Independent control panels in saloon and forward cabin

Lighting:
Overhead lighting throughout
Reading lights over bunks in cabins
All lights fitted with LED bulbs

Entertainment:
JVC CD/Radio headunit in mast cabin
Alpine Bluetooth/USB/MP3 radio headunit on flybridge
Sony marine grade speakers fitted to flybridge arch
Glomex TV Antenna
Glomex Urania 2 Mod. V9330 satellite TV receiver – Not used in current ownership

ACCOMMODATION



Summary of Accommodation:
Master cabin forward
En-suite forward heads
Heads with Jack’n’Jill access from starboard cabin
Starboard twin cabin
Galley
Saloon

Accommodation Finish:
Lightwood veneered joinery work throughout finished in a satin oil.
Fitted carpets throughout, all replaced in 2015
Moulded stone effect worktops in galley
GRP moulded heads compartments with Perspex shower screens
Vinyl covered headlinings throughout interior

Description of Accommodation from Forward:

Forward Cabin:
Central island type double bunk forward
Access to bunk from port and starboard sides aft
Bedside counter tops outboard of bed to port and starboard forward
Countertops running the length of the bunk outboard to port and starboard with built-in top opening vanity lockers on both sides.
Drawer storage beneath aft end of bunk
Hanging lockers aft of counter tops to port and starboard
En-suite heads accessed from port aft side of cabin

Port Heads:
En-suite access from mast cabin only
Corner countertop with inset wash hand basin forward
Marine toilet located outboard centrally
Shower stall aft with dedicated shower fitting, seat outboard and compact bath running aft

Starboard Heads:
Jack’n’Jill access from starboard twin cabin or walk-through forward
Shower stall area inboard forward
Corner countertop with inset wash hand basin outboard forward
Marine toilet aft outboard

Starboard Twin Cabin:
Accessed from starboard side of forward walk-through
Standing room forward
En-suite access to starboard heads from forward end of cabin
Hanging locker outboard of standing room
Walkway aft between two single bunks
Overhead storage lockers running length of bunks outboard with countertop above aft section

Galley:
Located to port side at forward end of saloon
Curved, U-shaped galley facing aft
Built-in oven and fridge with black and stainless steel finish forward inboard
Shallow countertop running length of galley, aft, outboard with storage lockers and drawers beneath
Curved corrian worktop wrapping around aft end of galley
Inset induction hob, inboard with inset stainless steel sinks outboard.
Storage lockers beneath cooker and sinks and outboard of oven forward

Internal Helm Station
Opposite galley to starboard
Elevated, double bench seat for helm
Steering wheel and engine controls outboard with engine dash panels mounted forward of wheel
Switch panel, navigation instruments and chartplotter inboard of wheel

Main Saloon:
U-shaped leather settee wrapping around a moveable saloon table to starboard
Countertop running around top of settee backrest outboard
Countertop outboard to port, running the length of the saloon area.
Icemaker mounted below port side countertop forward with TV cabinet and entertainment storage shelves aft
Overhead storage lockers running length of settee outboard to starboard
Overhead storage lockers running length of settee outboard to port and running forward to wrap around galley

DECK EQUIPMENT

Anchoring & Mooring:
Bower Anchor – Stainless steel plough type anchor on chain rode
Anchor Windlass – Lewmar electric with push button controls on fordeck and secondary control switches at both helm stations
Fenders – Selection
Mooring Warps - Selection

Tender:
Deck Crane – Electro-Hydraulic

Cushions & Canvas Work:
Cockpit Tent – Windows on sides and aft.
Flybridge Tent – Full standing headroom with window panels on all sides.

Flybridge:
Accessed by stairs from starboard side of cockpit
Helm station forward to starboard with bench seating for a maximum of 3 people
Nav instruments and VHF mounted outboard to starboard, plotter/ radar inboard and engine displays forward
Bench settee wrapping around port side of flybridge with cushioned backrest
Storage unit aft of helm seat to starboard with wash hand basin, worktop area and large storage locker beneath
Open bathing area aft to port with low arch spanning full width aft
Lifraft mounting cradle secured to rail at aft end of flybridge

Deck Layout:
Single stainless steel bow roller
Stainless steel guard rail running length of deck aft to cockpit with lower guard wire
Stainless steel mooring cleats forward, midships and aft
Below deck anchor locker forward with starboard opening deck hatch providing access
Deck wash outlet and self contained self-draining locker below port side deck hatch
Gently sloping forward section of coachroof with central bathing area, drinks holder rack spanning width of area at aft end
Stainless steel grabrails running length of coachroof, outboard to port and starboard
Stainless steel grab rails running length of wheelhouse aft to cockpit
Steps down into cockpit from port and starboard side decks
Stairs to access flybridge to starboard side of cockpit
Deep coaming wrapping around aft end of cockpit with central opening door to access bathing platform
Cockpit sole hatches lifting to provide access to lazarette locker space and generator
Storage locker built into forward and aft faces of cockpit coaming
Stainless steel tender mounting rail system for tender on bathing platform
Bathing ladder extending out from starboard bathing platform

SAFTEY EQUIPMENT:

General note on safety equipment: Any safety equipment such as liferafts, Epirbs, fire extinguishers and flares etc. are usually personal to the current owner(s) and if being left on-board as part of the sale of a used vessel may require routine servicing, replacement, or changing to meet a new owners specific needs.

Navigation Lights:
Anchor light
Navigation lights

DISCLAIMER
In this case we are acting as brokers only.
The Owner is not selling in the course of a business. whilst every care has been taken in their preparation , the correctness of these particulars is not guaranteed. The Purchaser is strongly advised to check the particulars and where appropriate at their expense to employ a qualified Marine Surveyor to carry out a survey and/or to have an engine trial conducted which if conducted by us shall not imply any liability for such engine on our part.
This vessel is offered subject to prior sale, price change, or withdrawal without notice.

Unless otherwise stated on the published sales specification the following presumptions are made:

Shaft seal or sail drive diaphragms are more than 5 years old.
Fuel, gas hoses and gas regulators are more than 5 years old.
The vessel doesn’t currently have a GasSafe certificate issued within the last 5 years.
Standing rigging and sails are more than 10 years old.