Hi guys, I am picking up a 2011 Ranger R21 EC Tug next monday. The state of the bow thruster is unknown at present. The previous owner removed the propeller blade from the thruster but cannot remember why he did, and has no idea where he put the propeller blade. Sadly he has dementia and I will either be looking at replacing the thruster propellor blade and or possibly the whole thruster unit hence my questions. Can anyone tell me the actual make and model number of the thruster unit and any tips of replacing the propeller blade and or unit? Thanks in advance guys. Oh and I am from the Land Down under (Australia).