Apart from CPTU, vane testing can be used to determine the undrained shearstrength under direct simple shear conditions in clays. Both intact and remoldedshear strength can be found. The vane test is the only in situ test method, which canbe used to determine the remolded shear strength and the sensitivity directly. The vane test is susceptible to heterogeneities in the soil. If parts of the vane (side, top orbase) are weaker or stronger, or if fragments of shells or small stones interfere withthe vane, this may influence the measured values significantly [20]. One needs to becautious in the estimation of undrained shear strength of low plasticity soft clays orsilt rich clays using vane shear. Progressive failure, the shape of failure zones, anddrainage of pore water pressure may affect the results.