The Mariner is a 15 year old with a mix of ex-bourbon and ex-sherry cask matured whisky. White Sands is a 17 year old, and matured in ex-bourbon casks. The Mariner is deep copper while the WS is a bit lighter, but still quite dark. Both are 43% abv, coloured and filtered. The Mariner is quite heavy fruity with apple, vanilla and a bit soapiness, while WS has lighter fruitiness with vanilla, turning woody with slightly sour wood smoke, resin and light cinnamon and ginger spiciness. The Mariner is a bit rougher than the more round and elegant but distinct WS. The Mariner has a more sweet peat smoke. Both have a quite light and fast fading aftertaste. The WS aftertaste is a bit drier and longer lasting. Both are nice whiskies in their own way, but I go for the lighter more elegant White Sands.