Objectives  In order to assess the shock resistance capability of shipboard equipment in close to actual combat conditions,

  Methods  the Large-scale Floating Shock Platform(LFSP)is designed and established, with shock load of the oblique baffle structure increased. Under four different standard assessment conditions with different counterweights, explosion source distances and explosion source depths, the simulation and underwater explosion calibration tests are carried out in the shock environment provided by the non-standard test system of LFSP. After the low frequency components of the test measurement signals are analyzed and processed, the similarity of the test results and the simulation results can be analyzed.

  Results  The assessment capability of LFSP is obtained under the standard conditions. The establishment of oblique baffle structure is proven to meet the requirements of transverse and vertical impact strength ratio in the normative shock environment.

  Conclusions  The results broaden the scope of the subsequent LFSP calibration test, which is conducive to the shock resistance test assessment on more shipborne equipment.