iPhone boaty apps...

[Hard-Drive]

What have you got then? I've got these...

Imray rules & signals...useful for revision
TidesPlan + ...worryingly innacurate
Navioncs UK Holland Plotter...not used in anger yet but seems brilliant
seeCompass...a pretty innacurate hand bearing compass but clever interface
Ship Finder...near as dammit AIS in your pocket, but sadly with mapping detail over land not sea!

Any other good recommendations?

[Rum Runner]

On a Blackberry, but I saw all the Apps for the Iphone in the Yachting World article it looked very interesting. Have to wait until my contract runs out..

[tank slapper]

Marine Day Tides is very useful. It has quite a lot of stations and you can plot against the tidal graph to work out minimum times around the tide according to your draught. The free version is for the current day, but the paid one allows dates in the future as well.

[XJSJohn]

Windfinder - which is damn accurate
Day Tides

[SpeedYellow]

Boatie

It's a really great app, has GPS app, weather including pressure charts and inshore forecasts plus a huge reference guide to lights and everything else you could want in you hand! Highly recommended!