• Your own files on the map (Premium): GeoJSON, KML, KMZ and shapefiles, from Layers ▸ Your files, a link, or "Open in Ocean Now" from Files, Mail, Messages or AirDrop — or dropped on the map on an iPad or a Mac. Lines, areas, points, icons and images as the file draws them, each as transparent as you like; tap a feature for its name and description. Kept on your device and in your own iCloud, and a KML's links to live data followed again whenever you ask.
• Draw on the map (Premium): waypoints, lines, paths, polygons and circles, each with its own name, color, line and opacity, and an emoji for a waypoint. Place waypoints tap after tap, type their positions, or press and hold the map and choose Wpt; edit any drawing by touch, clear them from the map in one tap and bring them back. Kept on your device and in your own iCloud.
• Send your drawings or files to anyone by AirDrop, Messages, Mail or Files. Ocean Now opens the drawings it is sent as drawings to edit; other map apps read them too.
• Type a position into Search, written any way — decimal degrees, degrees and minutes or seconds, with or without N, S, E and W — and a waypoint drops there; a recent search goes with a swipe. Tap the waypoint for its distance and bearing from you, or Go To (Premium): distance, bearing and arrival time at your speed, live as you go, along a dashed line from you to it.
• Keep a measured shape on the map after Tools closes, and gather what you keep — shapes, drawings and files — into named groups in Assets, shown or put away together.
• Sea ice from the satellites (Premium): its concentration, the ice edge and type, its drift, thickness and surface temperature, from Copernicus Marine's satellite products.
• The HUD reads the fields and currents at the crosshair, and its clock stands out.
• Currents and the other forecast layers show the hour nearest now, and keep up while the map stays open — Mercator's and ECCOFS's currents had been held hours behind.
• Colormaps: cmocean's whole set and GeoPalettes', any one reversed, and their order your choice in Settings ▸ Layers. Dissolved oxygen turns red below hypoxia at any range.
• The camera on its side: the shutter at the right, the place centered, and zoom by its lenses and a pinch, 2× a stop where the phone has it.
• While Locate follows you, press and hold its button to turn it off, the map left where it is.
• NOAA's National Weather Service named beside Apple Weather wherever the weather says where it is for.
• Lighter on the battery: color scales and currents drawn with less work, and the compass's beam only when it shows.
• Fixes: a colormap chosen in a newer Ocean Now on your other devices is drawn in the layer's own colors here; NOAA's shoreline tiles always finish loading; a camera closed as it opened leaves the map as it was.