TESTED TANKAGE

Cruising powerboats require high-capacity fuel tanks. These tanks generally come in one of three materials: aluminum, composite or steel. With proper maintenance, any of these tanks will provide decades of service.

While composite (fiberglass and resin) tanks require little or no attention, an aluminum or steel tank can fail (start to leak) in less than five years. In most cases, once a fuel tank starts to leak, it must be replaced. That process often requires removal of engines or a generator, cutting apart the old tanks, and fabricating and installing replacements. In some cases, joinery must be removed, and cabin soles cut apart.

Depending on the size of the boat and the work required, tank replacement can cost roughly $30,000 to $60,000. Given the cost, it pays to do everything you can to maximize tank life.

Aluminum tanks are found in roughly 90 percent of