Having a safety back-up air supply has many advantages over a standard alternate air source. The most obvious is that it is a separate air supply and allows self rescue in an emergency out of air situation. We are taught to stay with our buddy so that in case of an emergency they are right there rea...

Powerful, go-anywhere navigation; a Series Multifunction displays deliver the speed and simplicity of lighthouse II in a fast and fluid touch screen experience. With extensive networking options, a Series will put you in control of charts, sonar, radar and more.

This book introduces the reader to the fast-growing outdoor sport of geocaching, which combines aspects of treasure hunting, high-tech navigation, and exploration.

If you want to learn how to program, this is the book for you. Most texts on programming offer dry, boring examples that are difficult to follow. In this book, a wide variety of interesting and relevant subjects are explored using a problem-solving methodology that develops logical thinking skills w...

Includes: bearings, seals, dust cap, cotter key & lug nuts or bolts. Bearings & hub cavity 100% pre-greased. Grease seal & bearings are pre-assembled.

In an average year roughly 30 million men will go fishing. In this exciting, fast moving book readers are invited to journey alongside Captain Dan Keating as he travels around the world and back in time to discover that the ultimate catch is closer than we realize. The book weaves Dan s wild fishing...

Kayak fishing is one of the fastest growing sports in North America, thanks to the kayak's ease of use and the access it offers anglers to new and otherwise inaccessible waters - and The Ultimate Guide to Kayak Fishing is the most comprehensive book on the sport. Captain Scott Null and Joel McBride...

Developed by the United States Power Squadrons, the world's largest private, nonprofit boating organization, Marine Amateur Radio is a complete guide to the use of ham radio for two-way and network communications among boats and between boats and shore stations. Briefly, succinctly, and clearly, thi...

"The purpose of this field manual is to provide a standardized source document for Army-wide reference on 'map reading' and 'land navigation'. This manual applies to every soldier in the Army regardless of service branch, MOS, or rank. This manual also contains both doctrine and training guidance on...

This book concentrates on how RobotBASIC programs can interface with a wide variety of off-the-shelf hardware. Many options will be explored including both serial and parallel ports and how a separate microcontroller can be used to handle the low-level I/O operations. You will even see how vision, s...

Features: The submersible bilge pumps are tough enough for any bilge. High Flow: for use from 22-234L / Min (1.32-14.04 cubic meters / hour) Small size, high efficiency, low current (low cost switching power supply supporting); to achieve a small size perfect combination of high flow Unique automati...

The PC used to allow control of electronic hardware by interfacing through its I/O ports and operating system that allowed deterministic real-time control. The PC grew progressively more complex and powerful at doing GUI, multitasking, 3D graphics, virtual memory management, and much more. But it al...