Towingline                                                   zeesleper ELBE                               Nationaal Sleepvaartmuseum

Zeeschepen op het Haringvliet                 sleepboot HERMES                            Lekko

Tussen Hoek en Stad                                     sleepboot ISA                            Smit-Lloyd

Richard Fotografie                                         sleepboot FURIE                          Tugtalk

Maritimephoto                                                              sleepboot ARION                              AIS Westerschelde

tugfoto-blogspot                                            sleepboot WESTGAT                  windfinder

sleepvaartspotter                                  sleepboot HUDSON                 hurricane tracking  
 
shipspotters                                                  vanuithetkraaiennest                 Thames Tugs

wb shipspotting                                    eregli shipyard                      Meteo UK
 
ak maritime service                               robert allan ltd                     Neptune Shipyards

andre kempe                                              foss                                         shipfinder

havenkade                                          scheepsspotter                    knrm Hansweert

frits Janse                                          le-skipper                          Towmar Smit Baltic 

koopvaardij web-log                              classic tugs                         spotlist

Rotterdam tug                                     sleepboot adelaar

maasmondphoto

scheepvaartnieuws

frans sanderse

snrh 76 blog

wrecksite