The cargo oil tanker area has continuous doublebottoms and side cabins to protect.
货油舱区域有连续的双层底和边舱保护。
2
Double hulls or doublebottoms have been required in all passenger ships for decades as part of the Safety of Life At Sea or SOLAS Convention.
双底双壳，或已在所有的客运船舶所需的几十年的一部分海上人命安全公约或国际海上人命安全。
3
Doublebottoms draw their predictive power from the trends that precede them. As a series of lower lows print on a bar chart, downtrends often accelerate.