I’m transitioning from a 42’ sailboat to a Nordhavn 40. after 15 years with this sailboat I am a novice with the Nordhavn. There is no visibility to the stern from the pilot house so how do you dock stern to not being able to see?
Congratulations on a nice boat. Back in the late 90's through the mid 2000's, I delivered many Nordhavns, and I liked the N40 a lot.
First, I second the suggestion to contact
SeaSense in St Pete FL. I haven't talked to the two women who run it for years, but they are pros and have a ton of experience. If you call them, tell them Peter from "SeaSkills" said hello (we met at a couple TrawlerFests).
Second, there are many boats like the N40 that have limited sight-lines aft. As a suggestion, you first want to get a feel for how quickly the boat develops its own momentum, which you will discover is pretty damn slow, meaning the boat is pretty 'sticky' on the water and does not quickly respond to wind forces (current is another matter, but less of an issue in FL than PNW). The reason this is important is it will eventually give you confidence that you have time to put the boat in neutral and walk side-to-side out the PH doors, lean over, and look. Somewhere I have a video of a single-handed professional captain backing-down a 60-foot trawler at a Trawler Fest into slips made for 45-footers. He moved slow and took his time, must have walked side-to-side a half dozen times.
You obviously have a bow thruster, but you need to get comfortable with kicking the stern by first positioning the rudder,
then giving a shot of forward engine, then back to neutral. You also need to get comfortable with how your boat responds to prop-walk (she has a left-hand prop, so walks to starboard in reverse). I know many people talk about tossing a weighted milk jug in open water and doing drills around it, but I always felt it better to have closer proximity to actual hard stuff. Going down a fairway, turning around, and exiting gets you good practice in back-n-fill. After you're comfortable, back-out of a fairway (please, calm weather). Landing on side-ties/bulk-heads, leaving a side-tie berth by backing away. These all get you much more comfortable with how your boat moves in reverse, and how to build muscle memory.
The N40 backs-down pretty well (my Willard 36, though better than most sailboats, does not back-down very well). Most N40's I drove had an Edson knob on the wheel so you could spin the rudder side to side pretty quickly so you can kick the stern when needed. It takes some practice to get a feel of choreographing the wheel/rudder with shots of engine thrust, but if you take it slow, it gives you time to think and to recover. If there is a larger slip available to practice (one for a 50-60 footer), its a great way to learn. Chose a calm day when you can do 3-hours of docking drills. Plenty of fenders and a mild-manner crew are your best friends.
Good luck - the captains at SeaSense Boating are the best - you are lucky to be nearby.
Peter