@Ozzy
ships are of course builded on the cheap, companies who let them build are not in the business to let make jewels. Most ships I was on had the bare essentials and that,s it.
Electronis and automatisation was starting in the 80,s the only way to eliminate crews. Renown companies like Hapag-Lloyd were in the front rows of doing so. Problemn was that on each ship I ever sailed we had anyhow, with then reduced crews one man at all time in the engine room because the electronics and automatisations did not work as intended. That meant not that more crews were send back on the the ships. I sailed my last container ships
between 2005 and 2008 and when we sailed up the european rivers, Elbe/Weser/Thames/Mass/Schelde or ARG, Rio del la Plata etcetc,we took all automatisations out and drove the whole story on manual, that was the only way to reach port in a safe way.
As for classification companies,,peoples forget that also they are companies who are in the business to make money and therefore sometimes not "too" strong on rules enforcing. And don,t forget, when a shipping company operates 100 ships and the classification company is too strict, then the possibility of change to another classification company is not to be outruled. In the 70-80,s that was standard, one went to the DD, repairs were sky high and would take 3 weeks and next one saw a new classification and 4 days later the ship sailed again. Today it is much stricter, but nevertheless still a business to make money which limits in some cases possibly the enforcement factor now and then.