Echefu has cognate experience in shipping law, international trade law, arbitration and litigation. In the course of his practice he has represented shipping companies, government agencies and other maritime bodies in admiralty and maritime cases in superior courts in Nigeria up to appellate level, advised shipping companies and other maritime stakeholders on various maritime issues such as collision, charterparties, ship financing, general average, towage, piracy, carriage of goods by sea, the registration of ships in the Nigerian Ship Register and the registration of ships for cabotage trade, amongst other maritime issues. He is an article Reviewer for the Maritime Law Journal of the Nigerian Institute of Advanced Legal Studies (NIALS) and has presented papers. His writings have been published in reputable local and international law journals. He is a recipient of several scholarships such as the Sir William Solomon Memorial Scholarship and the Law Endowment Fund Scholarship, University of Cape Town.