... och här finns några länkar till sidor med bogserbåtar

http://www.baydeltamaritime.com/Lightbox%20JS/photos.html 

http://www.crowley.com/What-We-Do/Ocean-Towing-and-Barge-Transportation/Overview

http://www.crowley.com/What-We-Do/Harbor-Ship-Assist-and-Tanker-Escort/Overview

 http://www.foss.com/

http://www.foss.com/environment_hybridtug.html

 http://mckeil.com/our-fleet

http://gcaptain.com/the-race-is-on-nyc-tugboat-photos?484 

 http://www.k-sea.com/vessel/tuglist.pdf 

http://www.k-sea.com/main.php?_content=vessels

http://www.westerntowboat.com/Tugs/default.aspx 

 http://tugboatsonline.com/dispatcher/index_dispatcher.htm#California

 http://www.pacifictowboatservice.com/Offshoretowing.htm

 http://www.flickr.com/photos/11368020@N03/5598279165/in/photostream/