turned about with a very small helm

Hands or feet out of commission? Instead, steer with your tongue:

In initial tests, eight people were asked to perform four basic tongue movements – up, down, left and right – one hundred times each. While making these gestures, they wore a custom earplug containing a microphone pointing into the ear. This microphone can pick up subtle pressure changes inside the ear caused by the tongue forcing air around, like when a person blows on a microphone. Each movement creates a distinctive signal that can be mapped to a computer command or a wheelchair control.

I believe this was first predicted in the book of James, 3rd chapter.