The workhorse of our bay operations is the R/V Katy, a 57-foot long trawler. Our research fleet is rounded out by several smaller boats, each with special capabilities for working in different habitats and performing different operations.

R/V KATY

katyR/V KatyThe R/V KATY is 57 feet long, 16 feet 6 inches in beam, 6 feet draft, 40.8 gross tons, and 27 net tons. She is powered by a single 671 Detroit Diesel. Top speed is about 10 knots.

Below decks living quarters include bunk space for six. There is a complete galley with refrigerator and electric range. All the quarters are air conditioned. Fuel capacity is 3,000 gallons and fresh water capacity is 1,000 gallons. In addition to the normal controls on the bridge, there is a stern steering station.

A wet laboratory space is semi-enclosed off the work deck, A compartment immediately forward of the wet laboratory space can be used as a day room for personnel, or can be rigged as an instrument room for research projects. This vessel's primary utilization is as a stern trawler for class trips.

For more information, please contact This email address is being protected from spambots. You need JavaScript enabled to view it..

Small Boat Fleet

With a fleet of boats and lab buildings in Port Aransas perched hundreds of feet from the Gulf of Mexico, the Marine Science Institute is an ideal research location, whether someone is towing instruments behind boats, using data collected from geographical information systems or standing knee-deep in marsh muck to study estuarine ecology.  

C-Hawk thumb

C-Hawk

A 25-foot workboat with enclosed cuddy cabin forward and large cockpit. Equipped with 200-HP outboard and trim tabs. Suitable for bay or near offshore (in calm weather) work. Capacity 11 people or 1,500 pounds.

shearwater

Shearwater

A 26-foot “landing craft” with a 150-HP outboard engine. It can carry an 'All Terrain Vehicle' and gear or up to 14 people. Maximum carrying capacity: 2,600 lbs.

MowdyBoat

Mowdy

The Mowdy is a 25-foot catamaran with a 200-HP engine with a jack plate and ample deck space. This boat's purpose is to cross rough bays, but be able to go in the shallows. The hull drafts 10 inches and it is rated for 6 people. 

drcleo

Dr. Cleo

A 22-foot Boston Whaler center console with a 200-HP Mercury Optimax outboard engine. It is fully equipped with electronics and has a T-top. Suitable for bay and offshore (in calm weather) work, it has a capacity of 9 people or 1,650 lbs.

beachcomber

Beachcomber

An 18-foot custom “air-boat” powered by a high performance 454 cu. in. Chevy engine. It is used for ultra shallow research and delta/marsh work. Maximum capacity: 6 people or 1,110 lbs.

skimmer

Skimmer

An 21-foot center console, flat-bottom, tunnel-hull skiff, 175-HP outboard with Jacuzzi jet drive for shallow water operations. Maximum capacity: 5 people or 925 lbs.

lowe

Lowe

An 18-foot aluminum “John boat” powered by a 45-HP outboard. Its large deck is suitable for working various gill nets, etc. Maximum capacity: 8 people or 1,085 lbs.

montauk

Montauk

A 17-foot center console Boston Whaler with a 110-HP outboard motor. Maximum capacity: 5 people or 925 lbs.

bigwhaler

Big Whaler

A 16-foot center console Boston Whaler with a 70-HP outboard. Maximum capacity: 5 people or 925 lbs.

littlewhaler

Little Whaler

A 13-foot Boston Whaler with console, powered by a small outboard engine. Maximum capacity: 4 people or 600 lbs.

SegudoVez

Segudo Vez

A 25-foot SeaRay powered by a 260-HP inboard-outdrive. Enclosed cabin for electronics or equipment storage. Capacity of 8 people or 1,460 lbs.

Pursuit

Pursuit

The Pursuit is a 30-foot offshore boat it has two 250-HP engines, walk thru transom, dive platform, cabin and head. We can mount a 300 pound capacity davit that can pull about 80 pounds. It has a 7 person capacity offshore and a 11 person inshore.