Ships and shipbuilding

1Main engine & gearbox

The problem

Main engines, gearboxes and propulsion shafts are the largest source of machinery vibration on board. Mounted rigidly, they pass it straight into the hull and on to the accommodation as structure-borne noise.

What we fit

All-metal engine mounts with a stainless steel wire mesh cushion. No rubber to harden with heat, oil or salt spray, and no maintenance.

Typical choice

Vibration mounts 954202-95420350–7,000 kg · 11–22 HzVibration mounts 9544121,000–3,000 kg · 15–20 HzVibration mounts 954416350–3,000 kg · 15–25 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

2Diesel generators

The problem

Auxiliary generators run around the clock, at sea and in port. Their vibration reaches cabins and the bridge through the hull, and fatigues the foundation.

What we fit

A fully metallic genset suspension that works in compression and tension, in stainless or painted steel.

Typical choice

Vibration mounts 954416350–3,000 kg · 15–25 HzVibration mounts 95420150–900 kg · 18–25 HzStainless axial vibration mounts70–1,400 kg · 15–25 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

3Pumps & compressors

The problem

Pumps, compressors and fans are smaller but numerous and fast-running. Each one adds tonal noise and fatigue loads to its foundation and pipework.

What we fit

Compact all-metal mounts. Models such as the S402 work in any direction, so they can go under, beside or above the machine.

Typical choice

Vibration mounts S40230–700 kg · 15–20 HzStainless axial vibration mounts70–1,400 kg · 15–25 HzElectronics and aeronautics vibration mount 70010.3–4.5 kg · 6–12 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

4Funnel, exhaust & pipework

The problem

Exhaust lines, pipes and ducts grow with heat and take a hit every time the bow slams into a wave. Rigid supports crack and pass engine vibration up the funnel.

What we fit

Flexible all-metal supports for chimneys, pipes and ducts. Fully metallic, so fire, temperature and humidity are not a problem.

Typical choice

S501 exhaust pipe vibration mount20–7,000 kg · 10–25 HzTelescopic pipe damper40–730 kg · 3.5–5 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

5Bridge electronics & racks

The problem

Navigation, control and communication racks have to keep working through engine vibration and wave impacts. Connectors loosen and boards crack long before anything looks broken.

What we fit

Wire rope isolators: all-metal, non-magnetic and multi-directional, for vibration and shock at once. The same solution protects electronics racks on French Navy ships.

Typical choice

Wire rope isolators5–1,000 kg · 7–15 HzVibration mount 1202 / 9141–60 kg · 15–25 HzElectronics and aeronautics vibration mount 70020.7–60 kg · 6–12 Hz

Proven at sea: General Electric (2011), protection of electronics racks in military ships.

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

6Forward equipment & slamming

The problem

When the bow slams into a wave, equipment in the forward part of the vessel takes short, hard shocks on top of the usual vibration.

What we fit

Shock mounts with long travel absorb the impact energy and bring the equipment back to position.

Typical choice

Anti-vibration metal cushion0–3,000 kg · 10–35 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.