A worker stands near the NH3 Kraken, a tugboat powered by ammonia, on Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

A worker walks on the NH3 Kraken, a tugboat powered by ammonia, Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

The tank that will hold ammonia and power the NH3 Kraken sits on the tugboat on Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

The tank that will hold ammonia and power the NH3 Kraken sits on the tugboat on Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

Abigail Jablansky, head of project management, stands in the captain area of the NH3 Kraken, a tugboat powered by ammonia, Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

A boat, left, passes by the NH3 Kraken, a tugboat powered by ammonia, Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

Worker gestures from the NH3 Kraken, a tugboat powered by ammonia, Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

Abigail Jablansky, head of project management, walks down the stairs on the NH3 Kraken, a tugboat powered by ammonia, Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)