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On a calm day in open water check how the boat reacts at low speed quick burst 3
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On a calm day in open water check how the boat reacts in reverse 5
There is a paddle wheel effect of the propeller which turns the stern of the boat sideways. It only occurs when the prop shaft is angled inboard engines No prop walk with outboards Effect is not very strong in forward (because wash from propeller over the rudder dominates) but can be very strong in reverse. Prop is either right handed (turns CW in forward when viewed from astern) or left handed (ACW) So in reverse a left handed prop turns the opposite way CW and the stern is pushed to starboard. The effect depends on the geometry so is dependant on the boat Other factors eg off centred propeller will influence effect 6
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Radio ahead to get dock assignment ( and directions if appropriate) and request help docking Fenders Space fenders to protect bow & beam of boat. Correct height for dock (if unknown assume low) and tie off on rails or low on stanchions (not on llifelines!) If you are entering a slip have fenders on the opposite side to the dock side and if you have enough crew one can carry a roving fender Docklines Bow stern and at least one spring line make sure they are cleated off and long enough to allow crew to get off easily. Crew ready to step off with docklines (get over lifelines and hold onto shrouds avoid tripping over lifelines ) with all parts of body inboard of rail. Crew act as lookout for skipper 11
Helm s Job Brief Crew on procedures Bring the boat to a position alongside the dock at a slow speed or preferably stopped and close enough for the crew to step ashore with the docklines on command. Helm has control of fore-aft movement at the dock Crews job: Step off and control boat on cleats with docklines, belay lines when boat is in position Crew has control of sideways movement at the dock 12
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Before docking try to gauge effect of wind and current in most cases wind direction dominates but in some cases there is a strong current that dominates. Wind /current from ahead and onto the dock Easiest bring the boat in at a shallow angle keeping the bow away from the dock. Stop with the boat off the dock and it will drift sideways onto the dock Wind current from ahead and off the dock Bring the boat in at a steeper angle towards the dock. Turn away at the last moment so the momentum of the boat brings it into the dock crew need to get dock lines smartly on cleats to stop boat from drifting off dock. Wind/Current from behind as above but may need reverse to slow boat (remember prop walk will swing stern) 16
Springlines can be used to maneuver a boat into a tight berth Helm and crew need to know exactly what to do and do it correctly so this can be risky A common misuse of springlines is to attempt to stop the boat using an after spring line from the bow which turns the bow in and the stern out risking hitting an adjacent boat. In this case use an aft spring line from a centre cleat which will stop the boat and draw it in parallel to the dock. An aft quarter spring line will pull the stern in especially in conjunction with wash off the rudder. (turned towards the dock. 17
Docking between two boats approach at steep angle at C2 attach an aft spring line to the dock from the forward cleat Rudder hard over away from dock in forward will swing stern in to position C3 18
Where there is plenty of space use a midships aft spring 19
Leaving dock with wind and current from abeam Use aft spring power forward with rudder turned towards the dock to allow boat to pivot about bow (use a fender) 20
Leaving dock with wind and current from Ahead Use forward quarter spring to allow boat to pivot about stern (use a fender) 21
Leaving a slip with a tight turn. Remove all lines except forward quarter spring line (if you leave a forward spring at the bow make sure it is eased!) Reverse out of the slip and when the stern is clear snug the forward quarter spring with a horizontal fender protecting the hull for the corner of the dock. The boat will pivot around the corner of the dock. Release lines and move ahead 22
1. Practice maneuvering under power before you dock! 2. Practice docking in an open dock with no one around! 3. Discuss with crew beforehand 4. Attach plenty of fenders and at least 3 long dock lines (Bow stern, amidhips) 5. If you have a large enough crew rig a roving fender 6. If it is an unfamiliar dock check it out first 7. Never approach the dock faster than you want to hit it! 8. Call ahead for help 9. If you feel you are not on track to dock safely abort and come around again 10. Crew must never jump ashore 23
Thanks to the following for Illustrations and animations: Chapman Piloting Hearst Marine Books Sail Canada US sailing 24
Sail Canada Day Sailing- Basic Skipper Sail Canada Live aboard Intermediate (Bareboat Charter Skipper) and Advanced Sail Canada Coastal Navigation InternationalYacht Training International Certificate of Competence and International Bareboat Skipper Pleasure Craft Operators Card Radio Operators Certificate (ROC (M)) We offer Summer Courses in Kingston (25 & 30 ) North Channel lake Huron (up to 50 ) and Winter courses in the Caribbean (up to 50 ) 25
New later this year Sail Canada Basic modules - Take a Basic course as all modules or individual modules Afloat: Departure from Dock and Docking Power maneuvers & Anchoring Departure from Dock and Docking Basic Sailing Combined sailing manoeuvres & Emergencies under sail Ashore: Exam prep and Exam Modules will be 4 hours and will cost about $ 150 with a discount for multiple modules 26
www.learntocruise.ca Phil@Learntocruise.ca Phone 613 329 5540 27