As of March 2010 the Aruba customs department has started to implement the eSeaClear system, http://www.eseaclear.com/ , for yachts visiting Aruba. As the vessel will have to be cleared both by Customs and by Immigration the captain will still need to do the paperwork for immigration separately. Arriving yachts will have to tie up at Barcadera harbor to clear before they can go to an anchorage or to the marina.
For those yachts not using the esaeclear system customs and immigration forms can be found on the website of the Renaissance marina: http://www.renaissancemarina.com/clearance-procedures/