I think it is steerable, or can be steerable, see page 19 (page 38 of the PDF): https://stacks.stanford.edu/file/druid:ky237km2272/Margaret_Coad_Dissertation-au

I think it is steerable, or can be steerable, see page 19 (page 38 of the PDF): https://stacks.stanford.edu/file/druid:ky237km2272/Margaret_Coad_Dissertation-augmented.pdf#page=38 https://stacks.stanford.edu/file/druid:ky237km2272/Margaret_... The stationary power supply is a feature because batteries are heavy and flammable and usually not flexible. If you want to send a camera or something through a small hole, or underwater, or into some hazardous environment, it's nice to not have to send the power supply with it.