Whakaahuatanga Poto:

He Ine Tai me te Ngaru tino tika, i hangaia mō te aroturuki i ngā tai me ngā ngaru i te wā kotahi, kia taea ai te ine i ngā tawhā maha o te moana. Ka whakaratohia e te taputapu he tirohanga whānui mō ngā ngaru me te taumata wai, tae atu ki te taumata tai, te teitei nui o te ngaru me te wā (H₁/₃), 1/10 te teitei me te wā o te ngaru (H₁/₁₀), te teitei mōrahi o te ngaru, te teitei toharite o te ngaru, me ngā wā ngaru e pā ana.

Kei roto i te pūnaha he rokiroki raraunga totoka 32 G, ā, e whakakahangia ana e ngā pākahiko lithium thionyl chloride 2 x 3.6 V, e whakarite ana i te mahi motuhake mō te wā roa. Mā ngā reiti tauira whirihora o te 2 Hz, 4 Hz rānei ka taea te whakatinana ngāwari kia tutuki ai ngā whakaritenga aroturuki rerekē, me te whānuitanga ine tae atu ki te 20 m, 50 m rānei (whiringa).

He hoahoa pakari, kiato hoki tēnei, ā, ka taea te whakairi ngāwari i te taputapu hopu oro ki runga i ngā hanganga, i ngā papaaho rānei, he mea tino pai mō ngā whakamahinga roa i ngā taiao moana takutai moana, moana hoki, ngā roto, ngā whanga me ngā tono aroturuki wai whenua.