Hello my fellow sailors. My husband and I are new owners of a Catalina 310 and the last two times we have gone to anchor our anchor line has gone between the keel and propeller and wrapped around the propeller requiring us to manually go under the boat and untangle / cut the line. Both times we have been in the Moreton Bay and the tides / currents are swirling. So we have thought we were anchored down current of the line but we have swung around. This is becoming costly and frustrating and in yesterday’s event quite unsafe ( where we required a sea rescue as the motor wouldn’t start and with no anchor and no engine we were in a bit of trouble ) we feel like we are doing something wrong so any help / advise will be gratefully received. Thank you