grumpy_o_g
Well-Known Member
The key word is 'practicable'. It doesn't say 'if possible'. 'Practicable' is open to interpretation. It implies having the time and money, or skills to fit permanent lights, perhaps. It's possible to do the journey in daylight hops, though that would involve a stopover at Lyme which may not be practicable.
They mean the same thing really - if it is it feasible or possible to fit nav lights. There's a degree of interpretation I agree (so you wouldn't realistically modify a rowing scull to fit lights) but on a Sonata it's clearly practicable as it's been done before on more than one boat.