Naval Systems & Platforms

Naval Shock Testing

Survival at sea

Test and evaluation (T&E) is an important part of optimising surface combatants and submarines. A crucial stage in verification is ensuring your surface warship or submarine is capable of surviving different kinds of sub-surface explosions.

Naval shock testing can be performed during different stages in the development cycle, such as on hull components, hull structures or complete ships or submarines in so-called first-of-class trials. For on-board equipment, shock testing should be performed at the component, subsystem and system level.

At FMV T&E, we can perform all of these shock tests, as well as the evaluation of warhead performance, first as scale trials in the Blast Basin and then as full-scale trials at our Sea Range.

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Water cascades at sea, close to surface ship
Shock test of surface ship

A range of navy shock testing capabilities

Based on Swedish development programs, our FMV Naval Test Ranges have developed different naval shock testing capabilities, from research trials in our Blast Basin to full scale first-of-class shock testing at our Sea Range.

Learn more about the world-class facilities at our FMV Naval Test Ranges

 

Shock test methodologies

First-of-class trials and full-scale shock testing

This is performed on complete, operational and manned surface ships and submarines at our Härnösand Naval range. The trials can be performed:

  • As static or dynamic scenarios for surface ships and submerged submarines
  • Using very heavy charges, meaning they can also perform beyond design limit trials

 

Illustration showing a subsurface explosion close to a surface war ship

First-of-Class shock trial on surface war ship

Illustration showing a subsurface explosion close to a submarine in submerged condition

First-of-Class shock trial on submarine in submerged condition

Subsurface shock testing without a blast target

This is performed at one of our Sea Ranges. The area is heavily instrumented to allow advanced post trial analysis. We make it possible to:

  • Evaluate how large hull components or complete hull sections withstand the shock from a sub-surface explosion
  • Evaluate the shock performance of full-scale mines, depth charges and torpedo warheads

 

Illustration showing water cascades at the surface due to a subsurface explosion

Subsurface shock testing without a blast target

MIL-DTL-901E

Heavy weight shock testing (also called barge testing) is a method we’re currently developing, to allow shock testing of:

  • On-board components
  • Equipment and systems such as propulsion machinery, electrical cabinets, electrical motors, pumps, crew and weapon consoles

These trials are expected to be performed using a Large Floating Shock Platform (LFSP) with max payload of about 181 Ton (400,000lbs).

 

Illustration showing water cascades at the surface due to subsurface explosion close to a barge

Barge testing

The Blast Basin

The heavily instrumented Blast Basin is used for scale trials to evaluate the blast effects on small hull components. It can also be used to:

  • Evaluate the performance of mines, depth charges and torpedo warheads
  • Enable advanced post trial analysis

 

Aerial photo of the Blast Basin
The Blast Basin