Shipping is the canary in the coal mine for the ability of the United States to project power abroad, and that canary is increasingly faint.

Paul Jaenihcen, administrator of the US Maritime Administration (MarAd), delivered that message to attendees at the TradeWinds Shipowners Forum USA. He said the diminishing share of world seaborne cargo trade carried on US-flagged ships poses a broader problem for America’s image aboard.

Jaenichen