A1 was first used to mean "having the highest qualifications" in reference to commercial ships. ... It was soon common to express one's admiration for a vessel by referring to it as an "A1 ship." With over 300 manufacturers, A1Nautical offers a variety of assorted products for not only marine use but also camping, sailing, sporting goods, paddle sports, watersports, cycling, training/fitness, hunting, fishing, consumer electronics, automobiles, recreational vehicles and more have become the hallmark of our store. We are A1Nautical. Quality + Service = A1Nautical products.