Boating Calcs provides over 200 topics and calculators.  I for one have never committed to memory that hull speed = 1.34 * (LWL)1/2.  This $5 app has a plethora of information including: * Area, Angles & Volume * Communications References * Unit Conversions * Finance Calculations * Fuel Calculations * Glossary / Acronyms * Line [...]

First, I will tell you that this info is available for free via pdf here.  That being said, this searchable and bookmark-able version from DoubleDog Studios is far more usable for $5.  You may well also want the print version if you have space. (I have both versions) Here’s the info via Maritime and Coastguard [...]

Designed for Wind Surfers and Kite Boarders, Wind Alert is one of the best free apps for a mariner.  This aggregator brings together weather data in the form of wind information for a quick view of what you’re about to encounter.  It is the first thing I look at in the morning.  Generally I don’t care [...]

Seamanship is a reference for Deck Safety / Deck General topics.  If you don’t know a Metacenter from a Bollard, this is a great place to start.  Going beyond Chapman’s topics, this is go to information for the professional mariner. Information and procedures every boater needs to know. Seamanship is the U.S. Coast Guard’s manual [...]

Nearby Info Individual Station Data While you could go directly to the NOAA site for all the data you need.  Buoy Data aggregates NOAA data into a simple usable format that can be user defined.  I like the feature that shows wind and sea state by station. I’ve used this app for voyages to ascertain [...]

For those of you out there unaware, Shavings is a publication put out by The Center for Wooden Boats, available to anyone who becomes a supporting member. In our downtime (hey, it happens) we’ve been flipping through some of the old volumes of Shavings and found some articles so drenched in nostalgia we had to [...]