I am not sure they have both 3cm and 10 cm radars. I see only one good radar antenna.
In case they have one radar - it shoul be x-band, 3 cm. Reason: much better for closer objects (like ice), and will read SART if one is started in vicinity. Considering what they are doing I would always carry a SART in their dingies. (To call mama for help after a jap hits them with something…)
Next - there is no plimsol mark on the w-line. This obvioulsly means they are not registered as ship. The vsl is registered as a yacht. And in regard to the above - no obligation to carry 2 radars, or additional 10cm (s band)
Large thing on deck: tricky. Could be lrad, could be some generator unit, but i wouldn’t be surpised to be an air-con external unit. I see no 4th option.
Search lights: covered with canvas / or tarpaulin. I saw the same on their movies. Opposite to recommended safe practise. If they need them in emergency… Lousy seamanship, is the point at every step.