DAT(-…°C)
Design ambient air temperature for structural material properties where (-…°C) designates the lowest design ambient temperature in °C.
DEICE
De-icing or anti-icing systems.
DEICE-C
De-icing or anti-icing systems. Including cargo deck area.
DG-B
Class notation for ships carrying Dangerous Goods in Bulk.
DG-P
Class notation for ships carrying Dangerous Goods in Packaged form.
DK(+)
Class notation for heavy loaded cargo decks
DSV-BOUNCE
Arranged for support of diving operations intended for dredging.
DSV-SAT
Arranged for support of diving operations with no operating restrictions.
DSV-SURFACE
Arranged for support of diving operations with operating restrictions to maximum depth 60 m and operating time 8 hours.
DYNPOS-AUT
Class notation for Dynamic Positioning using a single dynamic positioning system, position reference back-up, and an independent joystick system back-up.
DYNPOS-AUTR
Class notation for Dynamic Positioning with a redundant dynamic positioning system and an independent joystick system back-up.
DYNPOS-AUTRO
Class notation for Dynamic Positioning with a redundant DP system and an independent joystick system back-up and an additional DP emergency control centre.
DYNPOS-AUTS
Class notation for Dynamic Positioning System.