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Technical articles for shipyards, owners, superintendents and buyers. We explain what the rules say and show every source.
Questions from the field.

Cell guides on container ships: design, clearance, damage
How the guides in the hold are built, which tolerances apply, how to spot damage and who decides on the repair.

ISO 9606 welder qualification: what the records say
How long a welder qualification is valid, what the six-monthly confirmation means and which records to ask a contractor for.

Hull crack repair to IACS Rec. 47: insert or doubler?
Why hull steel cracks, how a crack is gouged out, welded and tested to the IACS standard, and when an insert plate is needed instead of a doubler.

Afloat repair, dry dock or riding squad?
What "afloat repair" means, what needs a dry dock, which rules apply to riding squads at sea and how off-hire is triggered.

Schweißerlaubnis und Brandwache: was heute gilt
Wann eine Schweißerlaubnis nötig ist, was Brandposten und Brandwache unterscheidet, wie weit Funken fliegen und welche Regel inzwischen zurückgezogen ist.

Klassereparatur am Schiff: wer muss zustimmen?
Wann die Klassifikationsgesellschaft informiert werden muss, wann ein Besichtiger dabei ist und was eine Condition of Class bedeutet.

Arbeiten in engen Räumen und Tanks: was gilt?
Welche Messwerte vor dem Einstieg gelten, warum nie mit Sauerstoff gelüftet wird, was der Sicherungsposten tut und was die neuen IMO-Empfehlungen von 2025 ändern.
Some articles are available in German only. They are marked DE.
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