Nomos Glashutte Watch Ahoi Date Sapphire Crystal 558. The new Ahoi Atlantic is multifunctional, versatile and suitable for any occasion, an all-rounder. A reliable, robust, waterproof watch with an elegant design. Ahoi Atlantic is sharp and modern. The hour and minute hands are rhodium-plated. The white typography on the deep blue dial is especially easy to read through the sapphire crystal glass with an anti reflective coating on both sides.