Forward Mast exception w/ Bow Helipad

She has a foremast in the middle of the foredeck, like on many yachts I guess it is removable...

Yep; Removable or collapsible.

All of these yachts with bow helipads ...and anything with a bow helipad will likely be above 50-meters therefore required to have a steaming mast. For aesthetics and practicality permanent steaming masts have been pretty much replaced by telescopic/collapsible masts which at the touch of a button...retract into the deck and the head of the mast blends in flush with the deck/helipad. On large superyachts these masts are 3-stage masts and some are stayed and non-stayed designs.

Some of these lights go even pass just being a structure to house your 'all-round' anchor light and your steaming nav light. Some manufacturers have deck floodlights in the flushfit head portion. See this example below.

But in conclusion, if you see a yacht 50 meters and above and no visible steaming mast. IT HAS ONE just it is in the retracted position whether it is on a boat with a forward helipad or not...it will be incorporated somewhere on the foredeck.. These examples showing, "Lionheart", "OKTO" and "Yalla".

On some yachts like the AMELS Limited Edition 171 and above models they have their lights in the foredeck crane. So even though it is not a telescopic/collapsible design, the 'mast' still stows away horizontal to the deck so you can't see it when it is not in use.

Outstanding updates brother. Thank you for further examples.