Soundown Corporation Worldwide Leader in Noise and Vibration Control

2. CORPORATE OVERVIEW
 Est. 1983
 Locations:
• Salem, MA
• Marblehead, MA
• Ft. Lauderdale, FL
• Manitowoc, WI
 50 Employees

3. MARKETS
 Marine  Building
 Power Generation Construction
 Military  Transportation
 Recreational  Industrial/OEM
Equipment  Building
 Medical Construction
 Appliances  Computer &
Business Equipment

5. Noise & Vibration Control
Aboard Commercial Vessels
• Vibration Isolators
• Exhaust Silencers
•Insulation
•Products for Quiet Interiors

6. Vibration Isolation
 Engines  Shock Mitigation
Generators Hydraulic Piping
Pumps Electronics
Exhaust Stacks Deck Equipment
Piping Systems Interiors

7. Engine & Auxiliary Equipment Mounts
Conical Mounts
 Medium and High Speed Diesels
Free Standing Propulsion Engine
Single or Double Mounting of Generators
TT Mounts
Thrust Carrying Engine/Gear box Systems
Propulsion Engines in High Impact Craft
Equipment Mounts
Auxiliary Equipment of all Sizes
Plumbing, HVAC, and Other Systems

8. Propulsion Engine Installations
Good
Close coupled Engine/Gearbox with
Rubber Design TT Mounts
Better
Freestanding Engine on RD Conical
Mounts With the Gearbox on 095 Semi-
elastic Gear Mounts
Best
Engine/Gearbox on Combining Rail and
RD Conical Mounts Thrustblock With ERD
Double Coupling

9. Exhaust Stack Mounts
Fixed Points Compensators
Isolate Exhaust Isolate Movement
Piping at Fixed Between Pipe
Positions Sections
Stabilizers Isolated Rain Caps
Isolate Exhaust
Piping and Allow Flexible, Drip-Free
Thermal Growth Deck Penetrations

10. Shock Mounts
Applications
•Pumps, Motors, Electronics Cabinets….
•High Shock Environments
•Equipment Requiring an Extremely High
Degree of Isolation
Advantages
•Deflections of 50mm or More in All
Directions
•Protect Equipment from Shock Events
•Meets Requirements of MIL-901D, MOD,
STANAG….
•Calculate Static and Dynamic Loading

11. Waterdrop Exhaust Silencers
 Lloyds approved FRP wet exhaust systems
Main engines and generators
Discharge above water, below water, or stack
Custom configurations to fit any machinery space
Patented designs for the quietest yachts

12. How do Waterdrop Silencers Work
Exhaust gas and water are separated inside the muffler to
allow our tuned resonators to cancel exhaust tones. This
eliminates exhaust rumble and splashing that can be heard on
deck or in the accommodations.
All internal components of our Waterdrop Silencers are
designed to your application. This allows the internal
resonators to be tuned to the firing rate and gas flow of your
engine.
With the water and gas separated cool dry exhaust gas can be
routed overboard, underwater, or up the stack in FRP tubing
reducing weight and installed cost of steel piping and
insulation.

13. Generator Installations
Conventional Waterdrop Silencer
Vertical format provides the
greatest degree of water and gas
separation.
Recommended for stack
discharges.
Systems with integrated soot
sinkers greatly reduce floating soot
particles

14. Generator Installations
Axial Waterdrop Silencer
Horizontal format is configurable
into the tightest machinery spaces
Can be configured for installation
on top of generators where floor
space and walking areas are
limited
Mounting options from above or
below

15. Propulsion Engine Installations
Towers Mufflers
Gas/water separation system
facilitates the quietest installation.
No engine noise
No splashing of water
Configurable for hullside or stack
discharge
Custom parts can be designed to
fit in even the tightest engine room
Systems with integrated soot
sinkers greatly reduce floating soot
particles
Lloyd’s of London approved

16. Propulsion Engine Installations
Towers Mufflers
Designed to provide quieting of
gas exiting below waterline in a
compact muffler
Minimal back pressure
contribution
Used in conjunction with a
Conventional Waterdrop for
critical silencing of bypass
Ideal for midship or aft engine
room configurations.
Equipped with 150lb class
flanges for classified vessels

17. Propulsion Engine Installations
Axial Waterdrop Silencers
Axial format is ideal for
installation outboard and aft of
main engines.
Round or elliptical shells allow
these silencers to be optimized
for the avialable space without
sacrificing critical internal
volume
Water can be drained away
separately or recombined with
gas for a common discharge
Available with multiple inlets
for twin turbo or triple/quad
engine installations

18. Insulation Products
 Acoustic  IMO Approvals
Thermal MIL and NATO
Compliance
Structural Fire
Protection Electronics
Floated Floors Deck Equipment
Interiors

19. Incombustible Hull Board
Applications
•Acoustic, Machinery Spaces Insulation
•Thermal, Hull and Deck Insulation
Advantages
•IMO Certified as Incombustible
•Easily Shaped for Fast Installation
•Excellent Thermal Insulation,
K Factor of 0.23 @ 75C
•Superior Acoustic Performance,
NRC of 1.05 @ 2”

20. Polyimide Foam
Applications
•Acoustic, Machinery Spaces Insulation
•Thermal, Hull and Deck Insulation
•Pre-form Beam Wraps
Advantages
•Meets DOD-I-6488
•Extremely Low Weight,
0.39lb/ft3 (6kg/m3)
•Low Flame Spread and Smoke
Development
•Reduced Fuel Consumption
•Increase Stability

21. Mineral Wool
Applications
•Structural Fire Protection
•Acoustic, Machinery Spaces Insulation
•Thermal, Hull and Deck Insulation
•Floated Floors
Advantages
•A, B, and H Class Certificates
•Certified on Aluminum and/or Steel
•Low Cost
•Good Thermal & Acoustic Properties

22. Promaguard Panels
Applications
•Structural Fire Protection
•Thermal Insulation
Advantages
•Minimal Thickness, A-60 Aluminum
Requires Only 20mm
•Light Weight
•Approvals on Aluminum, Steel, GRP
and Wood
•Allows Maximum Interior Space

23. Vinyl/Foam Composite
Applications
•Soundproofing of Machinery Spaces
in Vessels Under 20M
•Insulation of Sound Shields
•Small Equipment Spaces
Advantages
•Easy to Cut and Install
•Decoupled Barrier Greatly Increases
transmission loss
•Uses Hydrolytically Stable Polyether
Foam for Long Lasting Installations
•Available as Precut Kits

24. Acoustic Absorption Foam
Applications
•Hull Sides in Vessels Under 20M
•Reduce Reverberant Noise Around
Machinery
Advantages
•Light Weight
•Easy to Cut and Install
•Uses Hydrolytically Stable Polyether
Foam for Long Lasting Installations
•Available as Precut Kits
•Multiple Facing Options

25. Mass & Damping Products
 Mil Spec Materials
IMO Approved Materials
Extensional Damping
Constrained Damping

26. Soundown Damping Tile
Applications
•Decks
•Bulkheads
•Machinery Foundations
•Bow Thrusters
Advantages
•High Dynamic Loss Factors
•Manufactured IAW Mil-PRF-26353D,
QPL Listed
•Easily Cut and Installed

27. TuffMass
Applications
•Hanging Acoustic Gaskets Sealing
Partition Bulkheads to Becks
•Privacy Bulkheads
•Add Mass to Side Lining Panels
Advantages
•STC 26
•Highly Damped
•Easily Cut and Installed
•Available with Pressure Sensitive
Adhesive for Ease of Installation

28. Products for Quiet Interiors
 Reduce Airborne and Structure Borne noise from
Machinery and Hydrodynamic Sources
Increase Cabin to Cabin Privacy
Eliminate Foot Fall Noise from Upper Decks
Allow for Full Utilization of Audiovisual Systems

29. Typical Bulkhead Constructions
Good
•6/3/6 15mm QuietCore Plywood as
one of the rough wall panels
•Soundown Microlite Acoustic Fill in
Cavity Between Studs
Better
•6/6/6 18mm QuietCore Plywood as
one of the rough wall panels
•Floated in Soundown IsoStrips
•Soundown Microlite Acoustic Fill in
Cavity Between Studs

30. Typical Sole Constructions
Good
•25mm Plywood subfloor
•Soundown IsoStrips Bonded to
Frame to Isolate Copy Sole
•Soundown Microlite Acoustic Fill in
Cavity
Better
•6/6/6 18mm QuietCore Plywood
Copy Sole
•Floated in Soundown IsoStrips
•Soundown Microlite Acoustic Fill
in Cavity Between Studs

31. QuietCore Damped Plywood
Applications
•Soles
•Bulkheads
•Plenums and Ventilation Ducts
Advantages
•Higher Transmission Loss Than
Plywood of the Same Weight
•Improved Damping
Characteristics
•Standard Panels are Constructed
with Meranti (Okume is Optional)
•Works with Standard
Construction Methods

32. Sylomer & IsoStrips
Applications
•Isolated Soles
•Isolated Bulkheads
•Machinery Isolating
•Piping Isolation
Advantages
•Multiple Grades to Handle Variable Loads
•Increase Cabin to Cabin Privacy
•Reduce Radiation of Machinery Noise into
Accommodations
•Prefabricated IsoStrips for Easy
Installation

33. Premium Carpet Underlayment
Applications
•Salons
•Staterooms
Advantages
•Reduce Structureborne Noise
Radiated Off Decks
•Increase Privacy Between Decks
•Eliminate Foot Fall Noise
•Plush Underfoot Feel
•Easily Installed

34. QuietCore Plywood
Good
•6/3/6 15mm QuietCore Plywood as
one of the rough wall panels
•Soundown Microlite Acoustic Fill in
Cavity Between Studs
Better
•6/6/6 18mm QuietCore Plywood as
one of the rough wall panels
•Floated in Soundown IsoStrips
•Soundown Microlite Acoustic Fill in
Cavity Between Studs

35. Typical Bulkhead Constructions
Good
•6/3/6 15mm QuietCore Plywood as
one of the rough wall panels
•Soundown Microlite Acoustic Fill in
Cavity Between Studs
Better
•6/6/6 18mm QuietCore Plywood as
one of the rough wall panels
•Floated in Soundown IsoStrips
•Soundown Microlite Acoustic Fill in
Cavity Between Studs

36. CAPABILITIES/SERVICES
 Specification Review  Custom Fabrication
 Insulation Plans  Short Lead Times
 Sea Trials  Mil Spec Products
 2D & 3D Drawings  IMO Approved
 Solid Body Analysis Products
 FEA  Kitted Parts
 Acoustic Calculations

37. Thank You For Your Time
REPRESENTED BY:
Robert A. Bova
rbova@soundown.com
P: 978.745.7000
F: 978.745.0900
www.soundown.com