ʻO ka wehewehe pōkole:

Hiʻona Huahana:
1. ʻO ka porosity kiʻekiʻe e hōʻoia i ka kahe nui o kēlā me kēia wahi;
2. ʻO ka ʻili ma waho, ʻaʻole maʻalahi ka hoʻopili ʻana o nā haumia, holoi maʻalahi a maʻalahi hoʻi;
3. Hiki i ka anti-fouling: ka liʻiliʻi o ka kānana i hiki ʻole ke mālama ʻia nā haumia i loko o ke kino kānana;
4. Ke kū'ē i ka waika ikaika, alkali corrosion, kū'ē i nā mea hoʻoheheʻe organik;
5. Nā waiwai mechanical maikaʻi loa;
6. ʻAʻohe hoʻokuʻu ʻāpana.
7. Laulā Huahana a me ka laulā o ka noi