Примери за shipworm

• In 1980 an attack of shipworm on the Barmouth viaduct nearly forced the closure of the Cambrian Coast Line.

• Why shipworms are suddenly surviving in Maine in places where they haven't before is still an unanswered question.

• One of the most notorious for the damage it can cause to unprotected wooden boats and piers is the shipworm, Teredo.

• His ships were reduced to sponges by shipworm and eventually scuttled.

• This was principally because the logs, which were often left for long periods in the water due to the poor and infrequent steamer services, became infested with teredos or shipworms.

• Gribbles, shipworms and bacteria decompose the wood and gradually turn it into nutrients that are reintroduced to the food web.

• Some damaged timbers were found to be infested with shipworms, which required careful removal to ensure they did not spread throughout the hull.

• The shipworm lives in waters with oceanic salinity.

• The bridge supports had been weakened by the marine mollusc teredo navalis (commonly known as shipworm).

• The drag from the hull growth cut the speed and the shipworm caused severe hull damage, especially in tropical waters.

• Its lightweight wood (specific gravity of 0.27) is resistant to termites and shipworms, so is used as timber for structures and outrigger canoes.

• Shipworms penetrated the copper sheathing at the nail holes, however, making the effort an expensive failure.

• Thus, it was also used to sheathe the piles of piers in tropical seas, as a protection against teredo shipworms, and in locomotive tubes.

• A large log is present in the park, and this is full of tubular shipworm fossils.

• The new bridge cost $26,700, not including $362 to remove the shipworm-infested remains of the 1869 wooden bridge.

• These poles had been eaten by shipworm.

• What does present a problem is that in order for the silica to be effective against shipworms it needs to dry to some degree in order to harden.