Examples of glass filler (microspheres) and glass material (cut fibers and two fabrics) for plastics reinforcement: glass microspheres (or glass beads); diameter: about 300 µm, specific gravity: 2.5. Mineral filler mainly used to increase the stiffness of a thermoset resin and to make road safety markings; 5 mm length chopped strands of fiberglass used to reinforce thermoset resins; fibrous reinforcements for thermoset resins: two glass fabrics with different area density; fiber orientation: 0 and 90° (most common): weave pattern: taffeta (down left, area density: 550 g/m2), and 2x2 twill (down right, area density: 280 g/m2). Credit: WikiCommons/CC BY-SA 3.0

A Brief Modern History of Fiberglass

Fiberglass, also known as glass-reinforced plastic (GRP), has been an integral material in modern engineering and design, especially within the marine industry. Its lightweight,...
Propane tank valve and pressure gauge. Since a propane leak can be catastrophic, make sure to schedule in a propane tank and fitting check into your maintenance calendar. (Photo/ Marc Robic)

Propane Leak: How to Detect, Locate and Fix

There isn’t much that scares or worries me when it comes to all things about boats. Except two: large amounts of water coming in...

Sailing Triteia: Budget Bluewater Cruising

If I were to sum up, in one word, how James Frederick has managed to create his sailing life, I’d say “resourcefully.” The 49-year-old...
Replacing AGMs with Blue Nova lithium batteries. This was way above my pay grade! After trying to install twice with the help of "mates," I eventually found a brilliant young engineer in Cape Town. (Photo/ Brett Campbell)

Boat Improvements for the Technically Illiterate

My wife Amanda often asks fellow cruisers the question: Would you prefer to sail with an experienced mechanic who knew little about sailing, or...

Whats the Best Way to Restore Clear Plastic Windows?

Preserving a clear view through clear plastic on dodgers or enclosures is one of the most challenging tasks in boat maintenance. Restoring a vinyl window is almost impossible, but that doesn't stop the tide of products that claim to make this job easy. Practical Sailors eisenglass cleaners test looks at 27 products touted primarily as cleaners or treatments for vinyl windows. The test products were divided into type: cleaners, scratch repairers, polish protectants, and UV protectants. After a week of testing, we found Imar Strataglass Protective Cleaner and Imar Strataglass Protective Polish, distributed by Defender Industries, to be the Best Choice. Collinite No. 845 Insulator Wax and Mer-Maids Plexiglass Plastic Cleaner and Polish were the Budget Buys. The test also included products from the following manufacturers: 303, 3M, Aquatech, Armada, Davies, Marykate, Meguiars. Mothers, Novus, Plexus, Sailors Solutions, Star brite, Turtle Wax, West Marine, and Yacht Brite.

Windlass Replacement on an Island Packet 40

At first I thought that standing on the V-head toilet and climbing awkwardly into the chain locker was funny. I tried not to think...
Using only what they had available onboard, the cruisers rebuilt a broken clue on their genoa which lasted for thousands of miles of sailing.

Getting a Clue for the Blown-Out Clew

How do you manage major sail repairs in remote locations? By using whatever you have onboard to get you home—or beyond. After an easy three-day...
The engine mounts on my Perkins M20 diesel needed to be changed. Luckily, they are accessible so I was able to change them myself with a few basic tools and new parts. If your engine is less accessible, you'll need to ask a professional to change the mounts. (Photo/ Marc Robic)

How to Change Your Engine Mounts

It is always discomforting when you know, and actually feel, that something is not quite right. For a little while now, while navigating under...
With a few inexpensive materials and a bit of patience, you can redo the vinyl lettering on your boat yourself. (Photo/ Marc Robic)

Vinyl Boat Lettering DIY Application and Repair

One of the pleasures of boating, at least for me, is reading boat names! I enjoy the many humorous names and those that are...

The Scraper-only Approach to Bottom Paint Removal

Spring is just around the corner. For many sailors, especially those with boats on the hard, it’s good time to consider the advantages of...

Latest Logbook

Practical Sailor Logbook – September 2026

This month we tour the Hans Christian 48T — the offshore cruiser many sailors call the holy grail — walk the custom Antigua 60...

Video: Morgan 44 Review – The Catalina Cruiser Everyone Forgot

The 1989 Morgan 44 is a big center-cockpit cruising sailboat with Catalina DNA—but it may be one of the most overlooked boats of its...

Latest Sailboat Reviews

Bayfield 32 Used Boat Review

At first glance, the Bayfield 32 looks less like a fiberglass production boat from the 1980s and more like somebody shrank a traditional sailing...

Brewer 12.8/44 Used Boat Review

Antigua 60: Soolaimon

Pearson 35 Used Boat Review