If you want a monocular that is suitable for nautical use, you might be interested in the Barska AA11442 7x42 Waterproof Deep Sea Range Finding Reticle Compass Monocular. This monocular has fully multi-coated BAK-4 prisms that provide clear and bright images. It also has a non-slip rubber design that makes it easy to hold and use. It has a range finding reticle and a compass that help you navigate and measure distances on the water. The AA11442 is a versatile and reliable monocular for both experienced and beginner mariners. Learn More
The Barska AC10700 SWAT Tactical Rifle Scope is built to operate under the most demanding conditions. The AC10700 SWAT IR Rifle Scope features advanced multi-coated optics for an extremely clear view, and an illuminated Mil-Dot reticle keeps you on target in any lighting situation. The 30mm monotube construction allows for greater light transmission and provides the scope with a shockproof construction. This SWAT scope is fully waterproof and fogproof, and comes complete with 5/8" high see-through rings, 5" sunshade, and flip-up scope caps. Learn More