This forced Rupert to attack immediately to prevent the Dutch from gaining the weather gauge, before he could form a proper keel line.

Large grating on her keel line . . . very slightly to starboard.

Approximately 40% of the portside of the wreck remains from above the keel line to the stern and bow castles.

The straight keel line and sharp bow entry make the Penobscot 16 easy to paddle.

Gemstones that have been subjected to artificial irradiation generally show no visible evidence of the process, although some diamonds irradiated in an electron beam may show color concentrations around the culet or along the keel line.

In practice, firing close to the keel line caused significant blast damage to the superstructure, so in reality gunfire was limited to the broadside.

It had the bow altered to achieve an ice-clearing capability (20 raise from keel line).

In practice it was found that firing too close to the keel line caused unacceptable blast damage to the superstructure, and cross-deck firing similarly caused damage to the deck.

In the distance, Bjornstrom watched aghast as the keel line of the American's capsized craft was riddled from stem to stern by the Russian gunners.

It was thought possible that firing along the keel line might cause structural damage; tests requested by the Chief Constructor, however, showed the potential damage to be minimal.