Martin is an experienced and fully trained shipbuilder, based in a western European city. Due to significant economic change in supply and demand conditions for shipbuilding in Martin's own country, the shipyard he worked for has closed and he was made redundant. There was no other local demand for his skills within his own region and he would have to move to another country to obtain a similar employment, and could only find similar work locally through undertaking at least a year's retraining in a related engineering field. Which of the following describes the type of unemployment that Martin has been affected by?