VARIETY OF ABBREVIATIONS FOR TERMS OF STABILITY By Capt. J.
VARIETY OF ABBREVIATIONS FOR TERMS OF STABILITY
Mariner
VARIETY OF ABBREVIATIONS FOR TERMS OF STABILITY
By Capt. J.Isbester, Bulk Carrier Practice,
Nautical Institute, 1993
| Identity | Ship A | Ship B | Japanese Ship Building | Ship D | Ship E | UK DTp | RINA | Derrett |
| Stowage factor in cubic metres per tonne ( or cubic feet per long ton) | SF | S.F. | SF | SF | ||||
| Specific gravity | SG | SG | S.G. | SG | SG | γ | SG | |
| Volume of Displacement in cubic metres | V | V | V | |||||
| Displacement in tones | Displ | W, Δ | Δ | D | Displ’t | Δ | W, Δ | |
| Tonnes per cantimetre immersion, in tones | TPC | TPC | TPI | TPC | TPC | TPC | ||
| Moment to change trim one centimetre, in tones- metres | MTC | MTC | MTI | MTC | MCTC | MCTC | ||
| Longitudinal distance from the longitudinal center of buoyancy to the longitudinal center of gravity, metres | BG | BG = MG-MB | BG | BG | ||||
| Centre of buoyancy from midships (†aft), in metres | LCB | LCB, ÄB | MB | LCB | MB | LCB,ÄB | †LCB | |
| Centre of flotation from midships (‡aft), in metres | LCF | LCF, ÄF | MF | LCF | MF | LCF, ÄF | ‡LCF | |
| Centre of gravity from midships, in metres | LCG | ÄG | MG | MG | LCG,ÄG | |||
| Longitudinal metacentric height above top of keel | KML | LKM | ||||||
| Longitudinal Moment | L. MOMENT | |||||||
| Centre of gravity above Baseline / top of keel, in metres | KG | KG | KG | KG | VCG,KG | KG | KG | KG |
| Center of buoyancy above baseline, in metres | KB | KB | KB | KB | VCB | KB | KB | |
| Transverse metacentre above baseline, in metres | KTM | T.KM | TKM | TKM | TKM | KM(T) | KM | KM |
| Transverse metacentric height above center of graviry, in metres, without allowing for free surface effect | GM | GM | GM | GM | GM | GM | GM | GM |
| Vertical Moment | V. MOMENT | |||||||
| Correction for free surface effect, in metres | GG’ | GGo | GoG | GGo | GGv | |||
| Transverse metacentric height above center of graviry, in metres, corrected for free surface effect, or fluid metacentric height | G’M, GMf | GoM | GoM Corr.GM (*GM) | ÄGM | GoM | GM fluid | GM F | GvM |
| Moment due to free surface effect | i | F.S.MT. | i | I T | I, i | |||
| Right arm, in metres, without correction for free surface effect | GZ | GZ | GZ | GZ | G’Z’ | GZ | GZ | GZ |
| Right arm, in metres, corrected for free surface effect | GoZ | GoZ | GZ | GZ | GZ | GZ F | GZ | |
| Flooding angle, in degrees | qf | qf | f | qf | ||||
| Heeling angle at maximum GZ, in degrees | qmax | qm | qmax | m | ||||
| Angle of vanishing stability | qv | q R | qr | |||||
| Propeller immersion | I/D | I/D | I/D | |||||
| Block coefficient | Cb | CB | Cb | CB | C B | C B | ||
| Prismatic coefficient | Cp | CP | Cp | CP | C P | C P | ||
| Waterplane coefficient | Cwl | CW | Cw | CW | C wp | C w | ||
| Midships coefficient | Cm | C MID | Cm | CM | C m | C m | ||
| Area of waterplane, in square metres | WP | WA | A w | A | ||||
| Draft | T | d | ||||||
| Draft (forward), as read | df | df | ||||||
| Draft (forward), corrected | dF | dF | D Fore | d fp | d fo, dF | |||
| Draft (midships), as read | dm | d Ä, dM | ||||||
| Draft (midships), corrected | dM | d Ä | D Mean | ds | d Ä | |||
| Draft (aft), as read | da | d ao, Da | ||||||
| Draft (aft), corrected | dA | dA | D Aft | d AP | da | |||
| Mean of forward and aft corrected drafts | dme | dM | dm’ | |||||
| Mean of mean drafts | dM’ | CORR. DRAFT | dm | |||||
| Forward direction from midships, and trim by head | (+) | (-) | (-) | (-) | (-) | |||
| Aft direction from midships, and trim by stern | (-) | (+) | (+) | (+) | (+) | |||
| Value of MG, MB, MF is defined that C.G. or C.B. or C.F. is located abaft midship | (+) | |||||||
| Positive BG value is defined that C.G. is located abaft C.B. In this case the ship trims by the stern. | ||||||||
| Air draft: forward, midships, aft | Air d (f, m, a) | |||||||
| Capacity | M**3 | |||||||
| Weight | (LT, MT) | |||||||
| Moment | MT-M | |||||||
| Shear Force ( Max/Actual) | S.F. | |||||||
| Bending Moment (Act/Allow.) | B.M. | |||||||
