Someone has already upgraded them to "highway=service." My goal was to declutter the map. Viewing these ferry waiting lanes on imagery, they more resemble a parking aisle than a high speed primary highway.
The "highway=service" road is a member of the WA525 relation. The WA525 relation has multiple feature types along is course. From south to north the feature types are: "highway=motorway," "highway=primary," "highway=service," "route=ferry," and "highway=primary."

I pulled up the South Bay Salt Pond Restoration Project website, these, the maps tell me that these areas are "Managed Ponds." A pond is water. The previous four versions of these "Managed Ponds" each called them a water feature. I sustained your call of these being intermittent , but after looking at these South Bay Salt Pond Restoration Project maps and considering the how these areas look on each of the imagery sources available I would say they are perennial instead of intermittent. Also the South Bay Salt Pond Restoration Project maps tell me that these areas are owned and managed by USFWS since 2002. That strengthens the case for the USFWS National Wetlands Inventory information to be about as accurate as could be.

I mean the building is tagged a hospital.

The fort walls have the same form and function as a city wall, that is defensive fortification. It is certainly not a perfect fit since it does not enclose a city, but it is less wrong than a simple wall that encloses a field or a yard: barrier=wall

The fort walls have the same form and function as a city wall, that is defensive fortification. It is certainly not a perfect fit since it does not enclose a city, but it is less wrong than a simple wall that encloses a field or a yard: barrier=wall

Yeah, it looks like a relation with two members would be most appropriate.
https://www.gsa.gov/about-us/regions/welcome-to-the-pacific-rim-region-9/buildings-and-facilities/hawaii/prince-jonah-kuhio-kalanianaole-federal-building-and-us-courthouse

I don't know/don't remember. I think I just cleaned up some existing line work. It looks like the court house operates separately than the rest of the building.

There is breakers visible on ESRI World Imagery (Clarity) Beta, Mapbox Satellite, and Maxar Premium Imagery. No breakers but brown water visible on National Agriculture Imagery Program. I changed the feature type to shoal and removed the multipolygon tag. Thanks for the headsup.

Since your edit puts the coastline at high tide, your beach that goes no lower than the coastline, ignores the area of beach at low tide.

I can't see those features since you deleted them. I guess you are talking about the part of the beach below the coastline. As noted above, I used all of the imagery available to gauge a best guess of the low end of the beach. Interpreting both the outer surf line and the discolored water.

As for the proper location of the coastline, you say that the coastline I edited is not on the imagery. I did my best to read the imagery to find mean high water springs by identifying the border of the wet and dry sand and flotsam line per OSM guidelines on: natural=coastline#Where_is_the_coastline.3F. The vehicles at the water's edge on the 12 Sep 2021 Imagery which you used to remap the coastline would almost certainly be under water within 4-6 hours of this image with the next high tide. This area has two high tides and two low tides every day. If you tweak the display options of the 12 Sep 2021 imagery, you can better see the wet/dry line.

Still not sure what exactly you are talking about. Are you talking about Diamond Shoals? I used all of the imagery sources included. The waves clearly visible on the imagery show where Diamond Shoals lie. I used the imagery to map and the NOAA nautical chart as a guide. The NOAA chart says that they don't even survey that area because of the "changeable nature of the area." That leads me to believe that a sandy beach is the correct feature type instead of reef. A shoal feature might work, but since it is contiguous to the beach above the coastline, I chose beach. My Diamond Shoal feature extends three miles from the coastline, where NOAA's goes out to about 7.5.

I don't remember what the coastline looked like when I finished this change set. All I can say is that I tried to follow OSM guidelines for natural=coastline: natural=coastline. OSM Carto allows for beaches (natural=beach) to be mapped as a zone above and below the high water mark by using the key surface=sand or surface=gravel. Again this is per OSM guidelines.

Beach in the water? Any beach is partly underwater and partly above the waterline. Especially in areas affected by the tides. Also an image of a beach is immediately out of date because of shifting sands. In tidal areas, it is hard to know if the image was captured at high or low tide.

It was an unintentional error. Fixed now.

Yeah, I can work with that. Thanks for the help.

You are correct, by the letter of OSM's naming convention, adding "Historical" is incorrect. This is me being socially conscious. I would hate for a person in distress to show up at this bed and breakfast looking for assistance. As the features are now, after your recent update, they look as if they are part of active life saving station instead of an inactive or historical station. It is the same as putting "Retired" in parenthesis as a suffix to a retired military officer, For example Admiral John M. Richardson, USN (Retired). Anyone would know that ADM Richardson is no long on active duty.

Thanks for the discussion, I am still not sure what is there at 91 Fort Weaver Road, Ewa Beach, HI. Street level imagery from 2019 prominently shows Pacific Tsunami Warning Center (PTWC) sign visible. The PTWC History page (https://www.tsunami.gov/?page=history) ends around 2004, leaving the reader to think the PTWC is still at Ewa Beach.
However, the USGS Honolulu Observatory (HON) website: (https://www.usgs.gov/natural-hazards/geomagnetism/science/honolulu-hon?qt-science_center_objects=0#qt-science_center_objects) talks about being located at the "former" PTWC facility. The visiting hours page at Tsunami.gov shows the PTWC location at Ford Island, (https://www.tsunami.gov/?page=visit). A 2014 new article discusses the PTWC's imminent move to Ford Island, (https://www.hawaiinewsnow.com/story/25347332/pacific-tsunami-warning-centers-defends-controversial-move/). Yet the 2019 street imagery shows the PTWC sign.

Why commercial landuse? I had seen that somebody mapped NOAA's Western Regional Center in Seattle as a commercial area. NOAA, being a scientific organization, operates many laboratories, the OSM definition for commercial area includes laboratories. It makes sense that the area in Seattle, is commercial landuse. Reflecting on NOAA as an organization, it is part of the U.S. Department of Commerce, everything they do (nautical charting, fisheries, satellite monitoring) is for the promotion of commerce. It follows that any NOAA area would be commercial landuse. If NOAA has moved out of the Ewa Beach facility, and only USGS remains, then the area should be tagged: man_made=observatory.