Similarly, Ports of Auckland made a choice. One of their tugboats had come to the end of its life. They have a commitment to be carbon neutral by 2030. So the next tugboat they buy, which will have a life of about 40 years, 30 years of its service will be after the point at which they're supposed to be carbon neutral. Therefore, they had to buy a zero-emission tug. Now, it turns out that no one in the world makes zero-emission tugs in that weight class. So they had to go looking for a manufacturer. That drove the price up to twice what it would be for an off-the-shelf diesel-powered tug. But, you know, if you take the full life-cycle cost of it, it actually ends up saving them over $2 million, both in the operations and the capital expenditure. 