305 Drophead

Nimbus 305 Drophead –
A day cruiser for socialising.

A new kind of day cruiser suitable for comfortable weekend and day trips. The boat is built on the new Smart Speed concept to create maximum comfort for all aboard at all speeds. Design and function are optimised for social activities and entertaining aboard.

305 Drophead is an open day cruiser and built on the same platform as the award winning 305 Coupé. This means stylistically pure Scandinavian design focused on simplicity of usage and clever functional solutions.

Comfortable simplicity –
electric canvas roof.

305 Drophead is an open day cruiser and built on the same platform as the award winning 305 Coupé. This means stylistically pure Scandinavian design focused on simplicity of usage and clever functional solutions.

One example is the powered canvas hood cover, which folds down into an integrated cassette in the window frame at the touch of a button – simple and elegant.

Aft deck table with integrated handles.

Scandinavian design
and timeless beauty.

The 305 Drophead virtually breathes Scandinavian design and materials have been selected with care. The interior of the boat exudes sheer quality and feels spacious and airy. The boat is fitted with integrated ventilation and opening port lights for generous light intake. Bulkhead covers in light coloured materials reduce noise. Mahogany fittings create a beautiful contrast with the lacquered surfaces and provide a warm atmosphere. Lighting is cleverly designed for both comfort and efficiency. The boat has two very comfortable cabins; the “owners cabin” and a side cabin, sharing the head and shower.

Smart Speed Concept
optimised for speeds
from 0 to 22 knots

In practice, the 305 has no real planing threshold and returns low fuel consumption at all
speeds. Speed can be adjusted to weather conditions, which provides better safety, comfort
and the best possible ride from which to appreciate your natural surroundings.

Attractive and
hardwearing textiles.

Textiles are in spin-dyed acrylic, a material that is not only hardwearing and withstands salt and sun without fading, is also soft and comfortable to sit on. The colours of the upholstery are light blue and beige. The colour scheme and contemporary patterns of the cushions enhance the furnishings.

The textiles have been carefully selected. Not only shall these be pleasantly attractive but also withstand sun, salt, water and hard wear. All textiles are from Sunbrella and renowned for withstanding hard climates and UV rays without colours and performance being affected. The cushion covers are machine washable.

The specifications are approximations and subject to variance. We reserve the right to make changes without further notice.
Some equipment shown may be optional extras and some options may not be available.

305 Drophead
Technical Specifications

Lmax, Overall length
10,07 m / 33,03 ft
Lh, Length of hull
9,74 m / 32,0 ft
Bmax, Overall beam
3,25 m / 10,7 ft
Bh, Beam of hull3,14 m / 10,3 ft
Ha, Air draught3,65 m / 12 ft
Air Draught, folded mast3,32 m / 10,9 ft
Th, Transport height3,58 m / 11,8 ft
Thv, Transport height in cradle3,67 m / 12,1 ft
Tmax, Draught0,90 m / 3,0 ft
CoG, Centre of gravity3,46 m / 11,4 ft
MLDC, max weight allowed5697 kg / 12560 Ibs
MLCC, Weight4100 kg / 9040 Ibs
MMTL, Max total load1600 kg / 3527 lbs
Max people8 Pers.
CE categoryB
Berths4 + 2
Fuel capacity250 l / 66 US gal
Water capacity150 l / 39,6 US gal
Hot Water capacity20 l / 5,28 US gal
Waste capacity80 l / 18,5 US gal
Start battery1 x 12V x 77 Ah
Service battery3 - 6 x 12V x 80 Ah
Service battery Heavy Duty1 x 12V 77 Ah
Frequency50 Hz
Battery charger12V 35A
Shore power230V AC
Engine alternatives:

Volvo Penta D3-110 81kW (110 hp)
Volvo Penta D3-150 110kW (150 hp)
Volvo Penta D3-220 164kW (220 hp)
Torqeedo Deep Blue i 1800 rpm 2×12,8kW (25,6kW) (80hp)
Torqeedo Deep Blue i 1800 rpm 4×12,8kw (51,2kW) (80hp)

Deep Blue i 1800 rpm,
for commercial operators and green boaters

It is not just power and performance that make Deep Blue the first of its kind. It is unparalleled performance combined with full system integration and groundbreaking safety levels that set Deep Blue apart from all other electric propulsion systems on the market.

All the components of the system are perfectly engineered to match each other and are completely waterproof. State-of-the art monitoring technology with pilot lines and insulation monitors safeguard the high-voltage system against the risk of short circuits. The same high-performance lithium batteries used to power cars also power Deep Blue – after we developed them further for use in boats. These and many more safety and performance features make Deep Blue a unique high-voltage propulsion system for electric boats.

High-voltage electric motor: available for shaft drive, saildrive or outboard; 98% motor efficiency
Top-class high-voltage battery: from the automotive industry. 9-year warranty on 80% of original battery capacity.
12 V battery: activates the high-voltage battery at each start-up.
Electronic remote throttle: for operating the electric motors and other system functions
On-board computer with touchscreen: waterproof with 5.7-inch display, 14 different application views.
Onshore power connection
Charger: charges the high-voltage battery/batteries from onshore power
Connection box: this is where all electrical and signal cables come together.
HV DC power (345V)
LV DC power (12V / 24V)
AC power (100 – 240V)
Data lines (CAN, Ethernet)

”Ready-to-Cruise” – A fully equipped package.

The 305 Drophead can be equipped with a specially designed “ready-to-cruise” package. It contains all
the extra equipment you need to start cruising and enjoy your boat from day one.

  • Plotter Simrad 9″ NSS, Evo 2
  • Shore power and battery charger Mastervolt 35A
  • Bow thruster SE 60
  • Depth / Log in Volvo instrument
  • Electric pump-out of septic tank
  • Heater system Ebersprächer D4
  • Hot water system 22 liter
  • Defroster
  • Intervall viper
  • Trimtabs
  • Volvo Penta Trip computer

Standard equipment

  • Kitchen with 65 l refrigerator and gas top
  • LED lights
  • Queen bed
  • 12 V electric outlet
  • Anchor box with drainage
  • Bathing platform with anchor box
  • Bathing ladder
  • Table on aft deck
  • Seafire automatic fire-fighting system
  • Manual fire extinguisher
  • Shower in toilet room / Shower cabin
  • Cushions in deck saloon
  • Cushions in cabins
  • Cushions on aft deck
  • Electrical panel with fuses
  • Electrical engine controls
  • Sea chart compartment
  • Fender holders or fender box
  • Flagpole
  • First-aid-kit
  • Glass / bottle holder in dashboard
  • Grab rail in stainless steel
  • Compass
  • Manual and electric bilge pump
  • Marine varnished mahogany interior
  • Carpets in cabins
  • Nimbus toolkit
  • Nimbus cutlery and crockery
  • Nimbus Décor Pillows
  • Pulpits and bollards in stainless steel
  • LED navigation lights
  • Septic tank with deck outlet
  • Signal horn
  • Self-bailing aft deck
  • Vacuum-infused sandwich laminate with divinycel core
  • Skylight on deck with curtain
  • Step-light aft deck and side-walk
  • Toilet room and WC
  • Windshield wiper and washer
  • Extended curtesy light in cabin