Ballast Exchange
Two wing ballast tanks joined by a crossover main, one draining as the other fills while a slug of water travels the pipe between them.
CSS
Vessel
15 animationsBulk Carrier Class
A bulk carrier's hatch covers roll open in turn and a heaped cargo profile builds in each hold beneath them.
CSSPremiumDraught Marks
A draught ladder on the stem plate with the waterline rising and falling across it, the mark level with the water reading out as the accent tick.
CSSPremiumDry Dock
A graving dock dewaters, the water plane dropping until the hull lands on its line of keel blocks and the blocks come up bright.
CSSPremiumGas Carrier Class
A gas carrier's spherical cargo tanks sit proud of the deck, each sphere's boil-off ring pulsing in turn while gas runs along the vent riser.
CSSPremiumHull Form
A body plan of nested station sections in which each half-breadth curve wipes off and redraws from the centreline, midship section first and outboard from there.
CSSPremiumHull Fouling
Growth accumulates along a strip of hull plate and drives the added-resistance bar up, until a cleaning pass wipes the strip back to bare coating.
CSSPremiumLoad Line
A Plimsoll disc with its seasonal freeboard comb beside it, the waterline stepping down the comb to the summer mark as the freeboard dimension opens.
CSSPremiumRighting Lever
A midship section heels to starboard and returns upright, the righting lever opening between the centre of gravity and the centre of buoyancy as that centre shifts outboard.
CSSPremiumShaft Propulsion
A shaft line from engine to propeller turns, the blade disc rotating while a thrust wake pulses aft of the boss.
CSSPremiumSlow Steaming
A speed pointer backs down its scale while the cube-law fuel bar collapses far faster than the passage-time bar lengthens.
CSSPremiumStability Curve
A GZ righting-arm curve wipes off and redraws across the heel axis while the ordinates standing under it drop and rise again, left to right.
CSSPremiumTanker Class
A tanker profile whose centre cargo tanks fill one after another to the ullage line while the segregated ballast wing stays empty.
CSSPremiumTrim Correction
A hull profile trimmed by the stern rotates about midships back to even keel while the forward and aft draught readings converge on the same figure.
CSSPremiumWatch Bill
A twenty-four hour dial divided into four-hour watches with three watchkeepers stepping round the rotation, the watch on deck held as the accent sector.
CSSPremium