President Donald Trump took office a little over a year ago, holding great promise for shipping. But a huge shipping-linked ethane deal unveiled on his trade trip to Beijing in November remains uncertain.

The White House announced during Trump’s visit that trade deals worth more than $250bn would create jobs by increasing US exports to China.

One of the largest — a $26bn, 20-year deal — was done between a Houston-based entity known as American Ethane and China’s Nanshan Group to ship 2.6