We are a one-stop shop, we also provide the accessories and components you need like, cod end buckets, flow meters and more!

Components & ACCESSORIES

Mechanical FLOWMETER

Length overall: 21.30cm (8.40)

Body diameter: 4.15 cm (1.62)

Impeller diameter: 7.50 cm (3.00)

Weight: 0.5 Kg (1 lb)

Materials: Polycarbonate body, nickel-plated brass nose cone, nylon glass-impregnated impeller, stainless steel shaft.

Depth rating: Full ocean depth (Free flooding)

Data readout: Manual resetting, six ten digits counter wheels, (000,000) reads ten counts per one impeller revolution (Last digit is 10ths)

Accuracy: +/-3%

Response: 0.20 to 10.0 m/s

Recording: 16 knots

Depth rating: 600m (1900 ft)

Data readout: LCD display, up to 6 digits, (000,000) reads one count per one impeller revolution

Accuracy: +/-2%

Powered: 2 x AA batteries

Response: 0.2 -20.0 m/s

Recording: 26 knots

Electronic FLOWMETER

Length overall: 27.30cm (0.15)

Body diameter: 4.40 cm (1.75)

Impeller diameter: 7.50 cm (3.0)

Weight: 0.45 Kg (1 lb)

Materials: Polycarbonate body, nickel-plated brass nose cone, nylon glass-impregnated impeller, stainless steel shaft.

Net Rings & Three Point Bridles

SEA-GEAR stainless steel Net Mouth Rings, like all the SEA-GEAR products are carefully manufactured to be strong, sturdy, and provide years of service.

SEA-GEAR makes a variety of Three and/or Four Point Bridles to guarantee a unit that is perfect for your applications. Front to back, Net Mouth rings: 100, 75, 60, 50, and 30cm diameters.

Pictured above: three point bridle attached to 30 cm net mouth ring

Upon request Net Rings can be modified to include a cross bar with tow eye or 3 eyes welded to Net Ring to facilitate bridle removal/replacement.


Made of top quality polyvinyl chloride (PVC), SEA-GEAR buckets boast an easy to use snap-together design and a permanent mesh screen. The units are available in standard outside diameters of 3 1/2”, 4 1/2” and 6 1/2” and arrive with the necessary rubber coated hose clamp for quick and easy attachment to the net. 

The nylon micron mesh window is generally the same mesh as the plankton net and must be specified at time of order. Model numbering system for this item identifies the outside diameter and length of filtering bucket bottom section in inches.

Cod End Ring, Jars and Hose Clamp

The Model 9001-PJ 1 liter sampling jar screws into the Cod End Ring Model 9004-PR, which in turn attaches via hose clamp Model 9004-RC.

The jars are also available in 1/2 liter (Model 900.5-PJ), 2 liter (Model 9002-PJ) and 4 liter (Model 9004-PJ) sizes. 1 liter glass jars are available. The internally threaded PVC Cod End Ring is supplied with a Rubber Coated Hose Clamp to secure it to the nets cod end collar. 

MODEL 9004-PR; PVC Cod End Ring is internally threaded to accept any SEA-GEAR sampling jar, and attaches to the net via hose clamp Model 9004-RC.

MODEL 9004-RC; Rubber Coated Hose Clamp is used for attaching the Cod End Ring to the net.

Clamp-On, Press On, Zip on Mesh Bags

Pictured left to right: dual grooved cod end ring with mesh bag. Model 9004-DC Dual Grooved Cod End Ring with rubber coated hose clamps.  We are able to manufacture any type of cod end device.

Vinyl Cod End Bag with filtration windows, CUFES Net, tubular net and draw string closure bags.

Clear Cod End Bucket

Sea-Gear Model 9012x18CB, Clear Cod End Bucket is 12” in diameter x 18” long, itfacilitates sample viewing and large organism capture.

The bucket is secured to the net via a mesh bag with a non-metallic zipper. Safety Lines are attached to the plankton net and mesh bag.  For ease of transport, the bag is equipped with carrying handles

Book Clamp

This NEW and unique SEA-GEAR innovation allows the attachment of multiple nets or other on-line instrumentation at selected cable intervals. Precision machined from delrin and stainless steel materials the lightweight “BOOK” CLAMP features superior strength, durability, and ease of operation.

Counter-clockwise rotation of the locking knob opens the door and self-centering cable jaws to accept cable diameters ranging in size from .31cm (1/8”) up to .79 cm (5/16”), clockwise rotation of the knob simultaneously closes and locks the door while grasping/securing the cable

Button Messenger

SEA-GEAR Brass Button Messenger, 1500-91B is a two-pound (91kg) general-purpose actuator designed for use with water bottles, plankton nets, double-release mechanisms, and other on-wire underwater devices. It offers a smooth cylindrical body without protrusions. The spring-loaded button slides back when pressed against the up to 5/16” (.82cm) hydro-wire. Depressing the button for cable removal is an easy task for cold, wet, left, or right hands. The messenger is equipped with a nylon lanyard for use with sequentially operated instruments.

Model 1500-91T Teflon Button Messenger conforms to the same critical design requirements as the brass version and offers the same ease of operation for applications in which any metallic contact is undesirable.

Double Release Mechanism & Wire Stop

Double Release Mechanism is used for “close-open-close” operation of Plankton Nets or miscellaneous flotation packages and water collection devices. The unit attaches to the hydro-wire by two quick release pins. It is held in place and swivels freely around Model 1500-WS Wire Stop. Release levers are activated through deployment of Model 1500-91B Brass Button Messenger. All accept up to .79 cm (5/16”) cable. Serial operation is a standard feature of the Double Release Mechanism.

Wire stop available in Brass, Anodized Aluminum and Delrin

Storage & Travel Bags

SEA-GEAR Net Storage Bags are made of top-quality mildew-resistant Vinyl Mesh. The bag will protect, transport, and store at least two SEA-GEAR Plankton Nets. It is equipped with strong carrying handles, a clear plastic window with Velcro closure containing a product identification card and corrosion resistant 2 way opening/closing zipper. Custom instrument bags for mooring or transport applications are available from SEA-GEAR.


Sea-Gear nets have been used for decades all across the globe, allowing researchers to examine ecosystems, weather patterns, and more.