Claimant worked for Employer for twenty years when he became aware that his exposure to workplace noise had caused hearing loss. He brought a claim under the Longshore Act. He argued that although he worked as a trackman operating switching engines, he sometimes worked on a track near a shipping channel and was a member of the longshoreman’s union, thus, he was a longshoreman under the Act. Employer controverted the claim on the grounds that Claimant never worked on, over, or adjacent to navigable waters. Employer further argued that switching cars was not integral or necessary to the loading or unloading of a vessel.