theONE on Apple Watch — what's on your wrist
Install the watch app, know what it can do without the phone, and pick the complications worth a face slot.
The watch app is not a shrunken phone app. It carries the handful of things you actually want without digging a phone out of foul-weather gear: the boat at a glance, anchor watch, weather, and a jot you can dictate from the wrist.
ANCHOR WATCH on the wrist is a READOUT, not a control. It shows ARMED (with the radius), OFF, or DRAGGING (with how far out she is). You arm and clear from the phone — the watch says so itself when the watch is off: 'Arm from iPhone Mission Control'.
Those states come from the phone, so the page checks how old they are. If the watch has not heard from the iPhone for five minutes it stops showing ARMED, OFF or DRAGGING, says when it last heard — LAST HEARD 2:14 AM — and what the phone said then, and tells you to check the iPhone. Opening theONE on the wrist asks the phone for fresh word. The helm panel's top line does the same (NO WORD SINCE 2:14 AM), and its depth dims and says OLD when the reading is more than 90 seconds old (VoiceOver says "old reading").
The drag alarm reaches the wrist with a haptic, which is the point: it wakes you when the phone is across the cabin on a charger. But it is MIRRORED from the phone, not worked out on the watch, so the phone has to be running for it to come.
THE LAST PAGE IS AN MOB PANEL — a big red button, a 'Drop MOB pin?' confirmation, and a haptic on the tap. It is not standalone: the watch asks the iPhone, the iPhone reads its own position and files the pin, and the panel reports back PINNED, NO FIX, UNREACHABLE or FAILED. Out of range of the phone it reads UNREACHABLE and 'Open iPhone app to drop pin'.
WEATHER works standalone, meaning the watch fetches it itself rather than waiting on the phone.
TEXT SIZE. Every page follows the Text Size set on the watch, the accessibility sizes included: the big figures, the small print and the OLD and stale lines all grow with it. A page that grows taller than the screen scrolls with the Digital Crown instead of running off the bottom, and at the accessibility sizes the helm panel's rows stack, one reading to a line. The complications grow their words too, OLD and 'as of' among them, and shrink a figure to fit before they would cut a word off.
Anything deep says 'Details on iPhone' rather than pretending a 40mm screen is the place to read a maintenance history.
Steps
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Install it
Open the Watch app on your iPhone, scroll to theONE, tap Install. After that every new build rides along automatically — you never install it again.
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Put complications on your face
Long-press your watch face — Edit — pick a complication slot — theONE. Four shapes are available: circular, corner, inline, and rectangular. The rectangular one holds the most.
Complications say how old their numbers are. The phone hands the watch fresh numbers only while theONE runs on it, so wind more than two hours old, and the boat's numbers — status, tanks, service due, Foresight, depth and speed — more than thirty minutes old, dim and say OLD or 'as of 2:14 PM'. The Anchor Watch complication shows ARMED, OFF or DRAGGING only for five minutes after the iPhone last spoke; after that it shows when it last heard (HEARD 2:14 AM) and no state, and before the phone has reported at all it shows a dash, never OFF. A tide or sunset already past is not shown as the next one.
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Jot from the wrist
Dictate a jot straight from the watch — on the Jot page, or by asking Siri. With your iPhone in reach it lands in the Jot Inbox on the phone like any other, ready to file later. If the iPhone is out of reach, or does not save it, the note waits on the watch — the Jot page shows how many are queued for sync — and goes when the watch next connects to the iPhone; Siri tells you which happened. Each jot carries its own tag from the moment you dictate it, so if the iPhone's 'saved' reaches the watch late and the watch sends the jot again, the inbox still holds it once.
The list under the button is your latest jots from the boat's Jot Inbox — the ones the inbox shows you, never someone else's private jot and never an archived one. The phone's Jot widget shows the newest of the same list. The phone takes it once theONE's Terms and Privacy Policy are accepted there, and only if your role on the boat can log jots; until then the phone turns it away and the watch holds it and sends it again later.
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Read the helm panel
The first screen is the helm panel: status and depth across the top, big speed underway or a big clock at rest, then HDG (heading) · DEPTH · WIND — depth and anchor distances in the length unit set on your iPhone — the next waypoint, tank chips and the tide. A fourth column joins the row when there is something real to put in it — HOUSE is your house-bank voltage, read off the boat. Under the wind reading you may also see something like "G28 fcst" — that is the forecast's gust, not a gust anything aboard measured, which is why it says fcst. Nothing aboard measures gust — the wind instrument standard has no channel for it.
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Why there is no barometer or moon phase
Because theONE does not have them to show. No barometric pressure reaches the app from your instruments or from the forecast, and there is no moon-phase data in it at all. A dial drawn from nothing is worse than no dial, so they are simply not there. If your boat has a barometer on the network and you would use it, say so — that is a sensor slice worth doing properly.
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If a complication reads blank
Usually the tank capacity is not set, or the phone has not handed the watch fresh data yet. Open theONE on the phone once and it wakes up.