Planet Earth

Alvin Gets a $40 Million, 21st-Century Makeover

The esteemed deep-sea submersible will soon be able to go four miles under the ocean's surface, allowing it to explore 98 of the ocean.

By Victoria TangJun 24, 2011 5:00 AM


Sign up for our email newsletter for the latest science news

Alvin has spent 47 years exploring great mysteries of the deep ocean. Many of the sub’s 4,664 dives have made history: Alvin surveyed Titanic’s wreckage in 1986, the first known hydrothermal vents in the 1970s, and the BP oil spill in 2010. But scientists who have crammed into its six-foot-diameter titanium cabin know there is room for improvement. Alvin cannot withstand pressure at depths greater than 2.8 miles, leaving nearly 40 percent of the seafloor off-limits. And the compact interior can be tough on passengers: Imagine sitting cross-legged on a thin cushion for up to nine hours at a stretch.

This September Alvin’s operators at Woods Hole Oceanographic Institution (WHOI) received approval for a dramatic $40 million makeover. Performance upgrades include new buoyancy foam that can withstand the 9,552 pounds per square inch of pressure that exists four miles down—giving scientists access to 98 percent of the ocean. As for endurance, Alvin’s lead-acid batteries will be replaced with lithium-ion batteries allowing up to 12 hours of operation.

Kellie Jaeger | NULL

Passenger comfort will improve too. The 18 percent larger cabin will feature foldable seats. Five view ports are to replace three smaller ones, providing overlapping views of wonders like lava flows and strange sea creatures. “Ultimately, we’d like to go to mid-ocean ridges located deep in the southwest Indian Ocean and the mid-Atlantic,” says Susan Humphris, the WHOI geochemist overseeing the upgrade. “Those places are completely unexplored.”

1 free article left
Want More? Get unlimited access for as low as $1.99/month

Already a subscriber?

Register or Log In

1 free articleSubscribe
Discover Magazine Logo
Want more?

Keep reading for as low as $1.99!


Already a subscriber?

Register or Log In

More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Our List

Sign up for our weekly science updates.

To The Magazine

Save up to 70% off the cover price when you subscribe to Discover magazine.

Copyright © 2023 Kalmbach Media Co.