Blind Faith Page 2

<br Without question, fog is the biggest reason sailors cite for avoiding the Maine coast in summer, despite the fact that it is otherwise an excellent cruising ground. Although sailing in Maine can indeed be quite opaque, this need not be too disconcerting. Instead of being mindlessly fog-phobic, it is better to view fog, wherever you meet it, as just another navigational puzzle to be
Author:
Updated:
Original:

WHAT KIND OF FOG?

Meteorologists recognize four distinct types of fog. Knowing what type is present can help you cope with it more effectively.

Advection fog

Also known as sea fog, this is the most common type. It’s formed when warm, moist air passes over cold water. The cold causes the moisture to condense, forming tiny water droplets suspended in the air. Sea fog appears most often during the summer, especially at night and during the morning. It is thickest when the wind is light and tends to thin as the sun shines brighter and winds pick up in the afternoon.

Radiation fog

Also called ground fog, this usually forms at night and in the early morning when the air is still and the sky clear. In these conditions, air near the surface cools more rapidly than the air aloft. If the air is cooled enough, the moisture it contains will condense and form fog. Radiation fog doesn’t usually last long. The warmth of the rising sun and/or a breeze of more than 5 knots usually disperses it by mid-morning.

Precipitation fog

Also known as “rain fog,” this occurs when rain from warm upper air layers descends through colder air near the water’s surface. Water vapor from the descending raindrops condenses and forms fog. It can occur most any time of the year with winds southwest through east. When the rain stops, the fog usually lifts, especially if the wind keeps blowing.

Steam fog

Commonly called sea smoke, this is caused by very cold air passing over markedly warmer waters. It generally occurs in winter, but can form in the late summer and the autumn. It behaves much like steam rising from a hot bathtub, obscuring visibility at or near the surface of the water. Increasing wind tends to dissipate it, as does the warmth of the midday sun.

Related

valleytrunk3

BVI Chartering in the Pandemic

The week before I flew out to the British Virgin Islands for a bareboat charter, I was having a few second thoughts. The islands had broken out of their Covid-enforced tourism hiatus in December, but the conditions of entry seemed a little stringent: a negative Covid test within ...read more

01-LEAD-windfarm

Sailing Amid Offshore Wind Farms

Here in Europe, the general feeling about green energy from offshore wind turbines has moved on after an initial surge of general skepticism. Concerns raised over cost, threats to seabirds, wind interference and the rest have to some extent been answered, and it’s hard to argue ...read more

LunaRossaPrada

VIDEO: Luna Rossa Wins the Prada Cup

The show has gone on despite last week's Covid panic in Auckland, and the "underdog" Italians are victorious. After being bested by INEOS Team UK in the round robin section, they seemed to have an uphill battle ahead of them going into the finals. However, the Italians have been ...read more

FB-BHM-Cuffe-2048x

Sail Black History Month Series: Paul Cuffe

Paul Cuffe was born on Cuttyhunk Island, Massachusetts, in 1759. His mother was a Native American woman named Ruth Moses, and his father was Kofi Slocum, a formerly enslaved man from the Ashanti Empire, located in modern-day Ghana. They had 10 children including Paul. His ...read more

Ryan-Finn

Point of SAIL: Ryan Finn on Solo-sailing a Proa Round Cape Horn

In this episode of Point of SAIL, Principal Editor Adam Cort talks with solo-sailor Ryan Finn, a veteran bluewater passagemaker looking to re-create the famed New York-to-San Francisco clipper aboard the 36ft proa, Jzerro. Although Finn was forced to abandon his first attempt ...read more

NewZealand

ACE Postpones Prada Cup

New covid cases in New Zealand have slammed the brakes on the selection series for the America’s Cup, forcing the postponement of Prada Cup racing and calling into question the remainder of the series. The America’s Cup Event (ACE) has put out a statement on their position as ...read more

LunaRossaLeads

VIDEO: Italians Lead in Prada Cup

After a dramatic first weekend of Prada Cup racing, Luna Rossa Prada Pirelli leads INEOS Team UK four wins to none. The magic number here seven: two more good days for the Italians or four nearly perfect days for the Brits. The Italians went into this series as the underdogs ...read more

03-Cockpit-Render

Balance 442 Performance-cruiser Design

A look at the thinking that went into the new Balance 442 performance-cruiser To say there’s a lot that goes into creating an all-new boat has got to be one of the world’s great understatements. And the job only becomes exponentially harder when boats get smaller, rather than ...read more