Shop by Brand: Davis Instruments

• Reduces troll speed in "down" position
  
• Acts as a stabilizer in "up" position
  
• Maintains stability in bow-light boats
  
• Smooths out ride in rough water
  
• Reduces porpoising and cavitation
  
• Made of only highest quality stainless steel and marine aluminum; clear anodized aluminum finish
  
• Installs in 15 minutes
  
• Stainless steel mounting hardware and installation & operating instructions provided with each unit

J-Base for Windex® 10.Sport for Side, Top or Front of Mast Mounting

Allows for side, top, or front mounting on most masts, on big boats or dinghies alike. Standard with the Windex 10.Sport, J-Base™ can be ordered as an option for Windex 15.

Standard with the Windex 10.Sport, J-Base™ can be ordered as an option for Windex 15. Allows for side, top, or front mounting on most masts, on big boats or dinghies alike. J-Base is made of glass filled polycarbonate, 2″ (5 cm) long. Includes stainless steel set screw and (2) #10 self-tapping screws. Reduces overall weight by 15 grams when substituted for standard mounting base on Windex 15.

• Fits all outboard motors up to and including 25hp
  
• Locks "down" for trolling, "up" for cruising
  
• Made of highest quality polycarbonates with stainless steel hardware

Line Snubber™ 22" - Black - 2-Pack

Line Snubber™ helps reduce stress on your lines and cleats. Molded of highest quality rubber for years of service.

• Superior rust and corrosion protection
  
• Rapid separation from water
  
• Greater stability at temperature extremes
  
• 10 - 20% reduction in operating temperature
  
• 5 times greater load carrying

• One pole is 19.5" (0.50M) long
  
• Second pole is 21" (0.53M) long
  
• Outside diameter of both is 1.3125" (3cm)
  
• Total length with both poles is 37.5" (0.95M) long

Queaz-Away Motion Sickness Wristbands - Pair

Queaz-Away is a non-drug aid for people on the go. The unpleasant effects of bumpy flights, choppy seas, winding roads, rocking trains, and spinning Ferris wheels can ruin a trip or outing. Queaz-Away wristbands exert gentle pressure on points on each wrist to minimize or eliminate the miserable effects of travel. Made of tough, long-lasting, washable materials. Safe and easy to use. Simply slip onto your wrists, position, and enjoy your travel. No complicating buckles or adjustments. One size fits all. Handy carrying case included.

• Holds objects from 7/8" to 2-1/4" in diameter (22mm - 57mm)
  
• Each clamp supports approximately 22lbs (10 kg)
  
• Mounting base measures 7/8 x 2-3/4" (22 x 70 mm)

• Quick Fist fastens an air hose in place
  
• Two Quick Fists secure building or landscape tools
  
• Two Quick Fists keep a boat hook handy

Quick Reference Boating Guide Card

Covers all the basic procedures and equipment. Includes pre-departure checklist, recommended equipment & spare parts, fueling procedures, engine troubleshooting, radio use, trailering, launching, anchoring, knot tying, and water-skiing hand signals. Gives rules of the U.S. Buoyage System and right-of-way. Helps in emergencies by covering distress signals, fire procedures, towing, weather warnings, and first aid (hypothermia & CPR).

Quick Reference Celestial Navigation Card

A simplified, yet complete Celestial Navigation system. Includes everything you need: sextant use and corrections, star finder for 18 stars, data entry form, and step-by-step sight reduction and plotting procedures. May be scored and separated; a large portion fits in the sextant case for quick reference, and a small part acts as a waterproof data reduction card.

Quick Reference Coastwise Piloting Card

All the piloting information you need at your fingertips: dead reckoning basics, true and magnetic compass relationships, position finding, estimating distance off, and current and leeway corrections. Helpful hints on chart reading, preparations, checklists, fog navigation, and depth soundings without a fathometer. Includes time, distance & speed calculator, relative bearing gauge for length-off calculations, and common chart symbols.

Features:

• Plastic
• Waterproof

Quick Reference International Navigation Rules Card

A comprehensive guide incorporating the International Maritime Buoyage System and COLREGS. Clarifies differences between Cardinal and Lateral buoyage systems and buoyage regions, the key to reducing confusion and danger when entering unfamiliar waters or busy harbors. Complete details on the right-of-way, sound signals, entering and clearing a foreign port, lights and day shapes, collision prevention procedures, and signal flags.

Quick Reference Navigation Rules Card

A proven navigation tool used by the US Coast Guard, US Coast Guard Auxiliary, and US Power Squadron. Navigation Rules feature the US. Buoyage System, inland and international rules, right-of-way, lights, sound signals, and bridge signals.

Any boat owner or ship captain knows many navigation rules; keeping them straight can be a challenge. Used by the US Coast Guard, US Coast Guard Auxiliary, and US Power Squadron, the Davis Instruments Navigation Rules card is a handy way to look up what you need quickly.

This Navigation Rules Quick Reference Card includes the US Buoyage System, Inland, and International Rules, Right-of-Way, Lights, Sound Signals, and Bridge Signals. The card also has zones of approach, distress signals, how to recognize lights of different ships and passage signals at night, and what to do if you are in doubt of a rule under certain circumstances.

The information on the card is presented in a way that is legible and concise. Colors and shading help separate the different information sections, making it easy to find. The Navigation Rules Card is full color on both sides, and it is three-hole punched for a binder or bulkhead mounting. It’s also weatherproof and made from durable plastic, allowing it to withstand anything that comes your way. The Navigation Rules Quick Reference Card measures 8 1/2 x 11 inches (22 x 28 cm).

Quick Reference Weather Forecasting Card

Shows the use of wind direction, barometric pressure, and cloud type in predicting the weather, plus a full list of radio weather stations for official broadcasts, key information on storm warnings, hurricane avoidance, navigating in fog and other hazardous conditions, and more. Weatherproof high-strength plastic, full color on both sides. Punched for binder or bulkhead mounting. Dimensions: 8.5″ x 11″ (216 x 279 mm).

• 24W, 24V heater
  
• Thermal cut-off switch
  
• Control unit
  
• Insulating reflective blanket
  
• AC-power adapter
  
• 50' (15M) cable

• Capable of melting liquid snow at a rate of 1/4" (6mm) of liquid precipitation per hour
  
• Warms only the inside of the rain collector and the cone itself
  
• Off/On switch allows you to turn heater on when you expect freezing conditions, and turn it off again when weather warms
  
• When turned on, the themostat switch turns power off if temperature reaches 110°F (43°C), and turns it back on with temperature drops to about 85°F (30°C)
  
• Cable length can be extended to 120' (36M) with two-twisted pair wire; further with single pair cable
  
• Replacement kit for stations with AeroCone rain cones

• Old style rain cone, bird spikes, and debris screen
  
• 24W, 24V
  
• Thermal cut-off switch
  
• Control unit
  
• Insulating reflective blanket
  
• AC-power adapter
  
• 50' (15M) cable

• Vantage Pro2 sensor suite or compatible stand-alone rain collector
  
• Must be plugged into an electrical outlet

Rocker Stopper Boat Stabilizer

Rocker Stoppers help dampen the rocking motion of boats at anchor. Simply tie Rocker Stoppers approximately 44 cm (18″) apart, making a string of them, with a 5-10 pound weight attached at the bottom of the string. Hang one string off each side of the boat. Just four units per side are what it takes on most boats to 36′. Be sure you hang them where they will always be underwater. Many people use mushroom anchors with their Rocker Stoppers because this type of weight nests well inside the last Rocker Stopper in your string. Use 10 mm (3/8″) braided nylon or 3-stranded nylon line.

Use without a weight (or with reduced weight) for drift fishing. Rocker Stoppers will slow down drift substantially. They are also great to use at the end of a dock to stabilize the tip from rocking. Rocker Stoppers nest together and each one is 33 cm (14″) in diameter.

It’s lightweight and molded of high impact, virtually indestructible styrene. Can be deployed or retrieved in seconds. Unaffected by salt water and cannot affect the sides of your boat. Units are made to “nest” within each other, so storage is a breeze.

Number of Rocker Stopper Units Needed on Each Side of the Boat (Sail or Power):

• Up to 26 feet (0-8 m) – 3
• 27 to 36 feet (8-11 m) – 4
• 37 to 42 feet (11-13 m) – 5
• 43 to 50 feet (13-15 m) – 8