Surge board

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Built-up surge board ( BTR-50 )
Dismantled surge board (BTR-50)
A BTR-80 with the surge board folded up on the water
An M113 with the surge board folded up when entering a body of water

A surge board (also wave deflector or surge shield ) gives floatable vehicles additional stability when crossing bodies of water.

It prevents undercutting, i.e. H. it prevents the vehicle's “ bow ” from boring its way into a wave crest and being pushed underwater by this and / or from water flowing into the hatches . It can be integrated into the armor to increase its protective value. The surge board is usually attached to hinges on the vehicle hull and must be set up before the journey in the water.

The technical design differs depending on the vehicle. The surge board can be folded in one piece or in two pieces. The shape of the hull determines the hinge points and the position of how the surge board is stowed while driving on land.

In some vehicles, the surge board can be locked at different angles so that it can also be used as a work platform in the horizontal position.

There are also differences in the method of assembling and dismantling the surge board. The simplest method is manual assembly and disassembly outside the vehicle. In some vehicles, manual assembly is provided, but folding can be carried out by the driver. Finally, there are surge boards that can be operated hydraulically .

On some vehicles, the surge board can restrict the driver's view . In these cases the driver must follow the instructions of the commander . It is therefore particularly advantageous for vehicles with combat missions if the surge board can be removed from the interior of the vehicle immediately after the journey in water.

Individual evidence

  1. ^ Motor calendar of the GDR. , Military Publishing House of the German Democratic Republic , 1988, p. 16 [1]
  2. ↑ a b Lutz-Reiner Gau, Juergen Plate, Jörg Siegert: German military vehicles: Bundeswehr and NVA , motor-Verlag, 2001 ISBN 9783613021525 [2]
  3. ^ Operator's manual for combat vehicle, anti-tank, improved tow vehicle, M901 United States Department of the Army , February 11, 1991, pp. 1-9 [3]
  4. ^ A b Wehrtechnik , Wehr und Wissen Verlagsgesellschaft, 1979, p. 61 [4]
  5. ↑ a b Department of Defense appropriations for 1988 , part 4, United States Congress , 1987, p. 162 [5]
  6. ↑ a b Operator’s Manual: Carrier, Personnel, Full Tracked, Armored M113A1 , United States Department of the Army, 1992, pp. 2–91 [6]
  7. ↑ Operator's Manual: Fighting Vehicle, Infantry, M2 and Fighting Vehicle, Cavalry, M3 , United States Department of the Army, 1982 pp. 1–14 [7]
  8. ↑ Michael Green: American Wheeled Armored Fighting Vehicles , Verlag Pen and Sword, 2016, ISBN 9781473854369 p. 90 [8]
  9. ↑ Capability of the Bradley fighting vehicle , United States Congress, April 24, 1987, p. E-7 [9]