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BALTIC YACHT M48

23Jun2008

This was the first Motor Yacht that we built. The Yacht was given a traditional exterior styling and a raised cherry wood panel interior, giving this a very classic look indeed. However the look was somewhat deceiving. "Behind the surface" was a very modern high-tech, high performance motor yacht starting with a very deep V hull shape to using Epoxy, Carbon, Kevlar vacuum-bagged laminates in order to reach high and comfortable performance.

Sound isolation was a challenge, because the owner wanted a very quiet yacht. So we went to great lengths to reduce the sound and vibration. Togehter we worked very closely on this with sound specialists to achieve the level required, (this really was a science within it's self). When working with something as challenging and exciting as this, you always have to have some understanding of whether the noises are airborne or structure-borne, and also have some understanding of natural frequencies from different materials in different environments.

The motorboat was primarily of a carbon construction, requiring good sound insulation. When you install pumps and equipment that create noise, they have to be mounted in some kind of isolated fashion or be placed on flexible mountings. Everything on this motorboat was soft-mounted, even the hydraulic tubes. Nothing, which made a noise or vibration, was connected directly to the carbon, they had to be soft-mounted. We completed "Far Niente" in 1997, and building this motorboat taught us many things about sound insulation that we have carried through to subsequent sailing boat projects.





SPECIFICATIONS

L.O.A.
14.80 m
48.6 ft

D.W.L.
13.02 m
42.7 ft

BEAM
4.28 m
14.0 ft

DRAFT, HULL
0.74 m
2.4 ft

DRAFT, PROPS
1.25 m
4.1 ft

OPERATING DISPLACEMENT
13,600 kg
29,983 lb

HULL
Sandwich construction. End grain Balsa sandwich with Kevlar/Glass fibres and Epoxy resin, vacuum bagged and post cured in higher temperatures for optimum strengt.

DECK AND FLYING BRIDGE
Sandwich construction. Carbon fibres and Epoxy resin with Divinycell foam core. Vacuum bagged and post cured in higher temperatures for optimum strengt.

INTERIOR
Structural bulkheads are in Epoxy sandwich laminates, vacuum bagged and post cured in higher temperatures for optimum strengt.
Visible surfaces covered with Cherry wood panels.

FUEL TANKS
2,700 l (713 gal)

WATER TANKS
700 l (185 gal)

HEATING
Eberspächer water bourne

AIR-CONDITIONING
CLD Marine

MAIN ENGINES
Twin MTU 6R183 TE93 625 hp (460 kW) at 2,300 rpm.

ENGINE CONTROLS
Mannesmann Rexroth Mini-Marex

GEAR BOXES
2 pcs ZF IRM 320A 2.083:1

PROPELLERS
2 pcs Rolla, five-blade.

BOW THRUSTER
Lewmar 200T, electric tunnel, 8 hp (5.9 kW).

STERN THRUSTER
Lewmar 200T, electric tunnel, 8 hp (5.9 kW).

GENERATOR
Northern Light, Diesel, 6 kW (8 hp).

AC SYSTEM
Shore power 220 V/AC
Inverter 24 V/DC — 220 V/AC

ELECTRONICS
Autopilot
Navigation instruments
Radar
B&G
B&G
Furuno

NAVAL ARCHITECT
C. Raymond Hunt Associates

STRUCTURAL ENGINEERING
C. Raymond Hunt Associates

INTERIOR AND DECK DESIGN
R & J Design / Baltic Yachts

YEAR OF DELIVERY
1997

This was the first Motor Yacht that we built. The Yacht was given a traditional exterior styling and a raised cherry wood panel interior, giving this a very classic look indeed. However the look was somewhat deceiving. "Behind the surface" was a very modern high-tech, high performance motor yacht starting with a very deep V hull shape to using Epoxy, Carbon, Kevlar vacuum-bagged laminates in order to reach high and comfortable performance.

Sound isolation was a challenge, because the owner wanted a very quiet yacht. So we went to great lengths to reduce the sound and vibration. Togehter we worked very closely on this with sound specialists to achieve the level required, (this really was a science within it's self). When working with something as challenging and exciting as this, you always have to have some understanding of whether the noises are airborne or structure-borne, and also have some understanding of natural frequencies from different materials in different environments.

The motorboat was primarily of a carbon construction, requiring good sound insulation. When you install pumps and equipment that create noise, they have to be mounted in some kind of isolated fashion or be placed on flexible mountings. Everything on this motorboat was soft-mounted, even the hydraulic tubes. Nothing, which made a noise or vibration, was connected directly to the carbon, they had to be soft-mounted. We completed "Far Niente" in 1997, and building this motorboat taught us many things about sound insulation that we have carried through to subsequent sailing boat projects.





SPECIFICATIONS

L.O.A.
14.80 m
48.6 ft

D.W.L.
13.02 m
42.7 ft

BEAM
4.28 m
14.0 ft

DRAFT, HULL
0.74 m
2.4 ft

DRAFT, PROPS
1.25 m
4.1 ft

OPERATING DISPLACEMENT
13,600 kg
29,983 lb

HULL
Sandwich construction. End grain Balsa sandwich with Kevlar/Glass fibres and Epoxy resin, vacuum bagged and post cured in higher temperatures for optimum strengt.

DECK AND FLYING BRIDGE
Sandwich construction. Carbon fibres and Epoxy resin with Divinycell foam core. Vacuum bagged and post cured in higher temperatures for optimum strengt.

INTERIOR
Structural bulkheads are in Epoxy sandwich laminates, vacuum bagged and post cured in higher temperatures for optimum strengt.
Visible surfaces covered with Cherry wood panels.

FUEL TANKS
2,700 l (713 gal)

WATER TANKS
700 l (185 gal)

HEATING
Eberspächer water bourne

AIR-CONDITIONING
CLD Marine

MAIN ENGINES
Twin MTU 6R183 TE93 625 hp (460 kW) at 2,300 rpm.

ENGINE CONTROLS
Mannesmann Rexroth Mini-Marex

GEAR BOXES
2 pcs ZF IRM 320A 2.083:1

PROPELLERS
2 pcs Rolla, five-blade.

BOW THRUSTER
Lewmar 200T, electric tunnel, 8 hp (5.9 kW).

STERN THRUSTER
Lewmar 200T, electric tunnel, 8 hp (5.9 kW).

GENERATOR
Northern Light, Diesel, 6 kW (8 hp).

AC SYSTEM
Shore power 220 V/AC
Inverter 24 V/DC — 220 V/AC

ELECTRONICS
Autopilot
Navigation instruments
Radar
B&G
B&G
Furuno

NAVAL ARCHITECT
C. Raymond Hunt Associates

STRUCTURAL ENGINEERING
C. Raymond Hunt Associates

INTERIOR AND DECK DESIGN
R & J Design / Baltic Yachts

YEAR OF DELIVERY
1997

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