There are diminishing returns in slow steaming with machinery designed to operate at higher outputs - particularly when reducing speeds to below 20 knots.

为更高马力设计的机器在减速中是效率递减的，特别是减速至20节以下。

youdao

The steaming of milk was too slow, cumbersome, and the bottleneck of coffee operations.

蒸汽打牛奶费时费力，成为咖啡制作的瓶径。

youdao

Ship operators who lease most of their ships only have one easy option to save fuel: slow steaming.

FORBES: A Leader in Efficient Shipping

Some of the extra capacity will be absorbed in the new practice of slow steaming - industry-speak for sailing more slowly.

BBC: How much bigger can container ships get?

Slow steaming has created work for a lot of ships that would otherwise have been idle, explains Vincent Clerc, a Maersk executive.

ECONOMIST: Shipping