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Wind Fall
Winds coming out of the south or east-tides will be stronger and later than expected. Winds coming out of the north or west-tides will be diminished and earlier than expected.
Foot Speed
At one knot, a boat will travel approximately 1.7' each second.
Hot Times
To convert from Fahrenheit to Celsius, subtract 32 then multiply by .555. To convert from Celsius to Fahrenheit, multiply by 1.8 then add 32.
What? No 911?
Radio distress signals:
MAYDAY Vessel is threatened by grave and/or imminent danger and requires immediate assistance. PAN-PAN Indicates caller has an urgent message regarding safety of a person or vessel. SECURITÉ ("se-cur-itay") Indicates caller is about to transmit information concerning safety to navigation or give an important meteorological warning.
A Current Affair Selecting Wire Gauge
| Current | Length of wire (in feet) | |||||
| (in amps) | ||||||
| 10 or less | 15 | 20 | 30 | 40 | 50 | |
| 5 | 14 gauge | 12 | 10 | 10 | 8 | 6 |
| 10 | 10 | 10 | 8 | 6 | 6 | 4 |
| 15 | 10 | 8 | 6 | 6 | 4 | 2 |
| 20 | 8 | 6 | 4 | 4 | 2 | 2 |
| 25 | 6 | 6 | 4 | 2 | 2 | 1 |
Ski-Daddle Hand Signals for Waterskiers
Faster: Palm of one hand up Slower: Palm of one hand down Speed okay: Arm up; thumb and forefinger form a circle Right turn: Arm out pointing right Left turn: Arm out pointing left Return to drop-off area: Arm pointing down at a 45-degree angle and swinging Cut motor: Finger drawn across the throat Stop: Hand up, palm forward, like a police officer Skier okay after fall: Hands clenched overhead Pick me up or fallen skier: One ski pointing vertically out of the water
Navy Signal Corps Two-Letter Flag Signals
| A C | I am abandoning vessel |
| I T | I am on fire |
| A N | I need a doctor |
| J F | I am in distress and need immediate assistance |
| A Q | I have an injured person who needs to be taken off immediately |
| J G | I am aground and in danger |
| C B | I require immediate assistance |
| J L | You are at risk of running aground |
| C J | Do you require assistance? |
| J W | I have sprung a leak |
| C N | I am unable to give assistance |
| K F | I require a tug |
| C P | I am coming to your assistance |
| K N | I cannot take you in tow |
| D V | I am drifting |
| N C | International Distress |
| D X | I am sinking |
| N E | Proceed with great caution |
| G W | Man overboard |
| N F | You are running into danger |
| I M | I request to be escorted until further notice |
| N G | You are in a dangerous position |
