This work package covers the validation and feasibility of new ultrasound methods developed in CIUS to reach the proposed innovation goals in maritime and oil & gas. Unlike clinical feasibility, this involves the user companies to a large extent, as facilities for larger scale testing is not supported by the CIUS facilities and plans. Feasibility and validation testing will however take place in close cooperation with CIUS personnel. Projects in this WP will prospectively be defined in close collaboration with user partners involved.