Log trade has evolved its own ships specialising in this commodity – loggers – the latest designs of which have capacious holds; are geared to 25 tonnes SWL (Safe Working Load); and are fully fitted for deck cargo (ie: with deck stanchions and lashing chains). Considerably larger than many serving the packaged lumber trades, these vessels are presently around 25K DWT (Deadweight Tonnes). Such a ship’s on deck capacity is normally described as a percentage of the underdeck weight intake – usually between 40% and 60%.