As the ship or fleet size is defined, the channel width is dependent on the track zone width, and track zone width is dependent on the drift Angle of navigation.

当船舶或船队的尺度确定后(主要是长和宽)，航道宽度即取决于航迹带宽度，而航迹带宽度又取决于航行漂角的大小。

youdao

Along the beachfront, a private marina large enough for more than 15 boats awaits, just in case your fleet wants to angle for walleye, trout or perch.

FORBES: Homes In The Most Unusual Places

From one particular angle, it is just possible to make out the mouth of the Fleet under Blackfriars Bridge, pouring into the Thames.

BBC: In search of London's lost rivers