Interboat / Intender 850

New to order
Length: 8.5m
New Model
Are you interested in this boat? Contact us

Be one of the first to own this exciting new model from Interboat. Due in 2024, the Intender 850 is the big sister to the Intender 820 and builds on it enormous success. 

The boat features a large aft sun-pad, port side walk through, luxurious cockpit seating and a wealth of optional extras.

The engine is cleverly mounted under the cockpit floor meaning floor space is maximised.

A range of engine options are available from 42hp to 250hp. However all models have a keel and shaft drive, giving relaxed and predictable slow speed handling.


Standard Specification

60cm Steering wheel 

Freestanding steering column with cupholders and stainless steel handrail

Rope fendering with Turkish knot (black or brown)

Waterline boot top

Under water primer and two coats of antifouling paint 

Soundproofing insulation in engine room

Solid engine foundation with fibreglass laminated steel

Automatic fire extinguishing system 

Water separator/coarse filter

Fuel valve

Fuel tank with fuel gauge

4 Stainless steel mooring cleats

2 Stainless steel spring mooring cleats

Stainless steel flagpole and ensign

Stainless steel skeg (up to 75hp)

Stainless steel protection strip around swimming platform

Wide gangways with non-skid surface

Several large storage areas

Bow compartment with wooden door

Insulated cooling box 70L in port bench

Anchor locker

USB/12 volt connection on steering column

Complete navigation lights

Manual bilge pump

Integrated swimming platform with step in transom

Stainless steel swimming ladder

Sprayhood with cover

2 Zips in spray hood front window

Sprayhood converts into sunshade

Comfort plus Sunbrella® cushion set with back cushions





Optional Extra’s


Different coloured fibreglass floor

Stainless steel pulpit bow railings

Stainless steel handrails on portside and starboard consoles

Puddening on rope fendering

Rubber D fender instead of rope fendering

Boarding pole

Luxury steering wheel 60cm

70cm Steering wheel 

Luxury 70cm steering wheel 

Champagne cooler with holder



Bowthruster 35kgf

Bluetooth audio system with 4 speakers

Cockpit lights

Compressor fridge 50 ltr in starboard console 

Compressor cooler in cool box portside bench 

Teak cupboard in port console

Flush toilet with waste tank

Sink with cold water tap in port console with Esthec lid

Deck shower 

USB/12V connection above fridge

Raymarine I40 Bidata

Chart plotter

2000W Inverter with Nespresso machine

Combi charger/shore power/inverter 2000W with remote control 

Electric anchor winch with chain

Electric bilge pump with float switch

Rudder indicator


Wood / Esthec®

Esthec® on swimming platform

Esthec® on cockpit floor 

Esthec® trim along gangway and foredeck                                   

Esthec® trim on cabin roof

Esthec® trim top of port and starboard consoles

*Colour Honey, Biscuit or Truffle

Removable teak table 

XL table converting to sunbed 


Canopies and Cushions

Removable sunbed with cushions 1.95m x 1.80m 

2 Armrests

Armrest with 2 s/s cupholders

2 Small cushions square or oblong 

Bimini sunshade

Extended bimini sunshade with connector piece

Blinds for sprayhood

Mixed colour cushions

Silverguard upholstery upgrade 

Quilted back cushions (only in combi with Silverguard)                 

Easy cabrio system 





Engine Options

  • 42 hp 4 cylinder Vetus diesel 
  • 52 hp 4 cylinder Vetus diesel 
  • 75 hp 4 cylinder Volvo diesel
  • 170 hp Yanmar common rail diesel
  • 250 hp Yanmar common rail diesel                                            
  • Krautler 7.2 KW electric motor, Zenith ZL6-400A batteries and 48 V/55 Ah charger
  • Hull material: Fiberglass
  • Length: 8.5m / 27.89ft
  • Beam: 3m / 9.84ft
  • Draft: 0.75m / 2.46ft
  • Dry Weight: 3100 kgs
  • Number of Engines: 1
  • Engine Make: Vetus, Yanmar or Electric
  • Engine Model: -
  • Fuel: diesel
  • Engine Hours: -
  • Total Power: -
  • Max Speed: -
  • Cruising Speed: -
  • Cockpit cushions
  • Swimming ladder
  • Cockpit cover
  • Manual bilge pump
  • Spray hood


Once you’ve bought your boat with us, we can offer moorings, boat storage, boat maintenance and engineering – all in one place. Excellent service with maximum ease, we’ll always be on hand for you.


Once you’ve bought your boat with us, we can offer moorings, boat storage, boat maintenance and engineering – all in one place. Excellent service with maximum ease, we’ll always be on hand for you.



Call our friendly team on 01189 403211 or complete the form below and we’ll be in contact