Page 56: of Maritime Reporter Magazine (August 1993)

SAFETY AT SEA

The End Of The

Grandfather Clause?

Implications For Owners, Builders & Suppliers

By Roger Kohn,

International Maritime Organization

The quaintly-named grandfa-ther clauses have been a fea-ture of maritime safety and anti-pollution conventions for decades. They are designed to protect existing ships from the im- pact of amendments which involve major changes to construction or equipment, because it was felt un- reasonable to expect a shipowner to have to carry out expensive alter- ations to his fleet every time the regulations were changed.

Today, attitudes have changed.

Two major conventions adopted under the auspices of the London- based International Maritime Or- ganization, the United Nations agency concerned with maritime safety and pollution prevention, have been amended specifically to make major changes retroactive.

The treaties are the International

Convention for the Safety of Life at

Sea (SOLAS), 1974, and the Inter- national Convention for the Pre- vention of Pollution from Ships, 1973, as modified by the Protocol of 1978 (MARPOL 73/78).

The reasons for this were best summarized by Norway in a note sent to IMO's senior technical body, the Maritime Safety Committee, in 1991. The note stated that "new regulations tend to make new ships more expensive and it is therefore desirable to modify a ship to extend its life instead of replacing it with a newer, safer vessel. It could, there- fore, be said that the introduction of new requirements for new ships, without also improving the old, tends to slow down an improved safety level for the fleet as a whole."

The problem today is that the world fleet of merchant shipping is aging; for example, cargo ships now average 20-years in age.

Old ships are not only more prone to accidents than new ones, but they were also built to design standards that are now regarded as out of date. But the current economic scene makes it almost impossible to operate new ships at a profit. Own- ers are therefore clinging to exist- ing ships for as long as they can.

The changes to MARPOL 73/78 were adopted in response to the

Exxon Valdez oil spill. All new oil tankers ordered after July 6 have to be fitted with double hulls or an alternative design approved by IMO.

This is perhaps the most important difference between IMO measures and OPA90, which only allows the double-hull option.

The decision was taken after a lengthy examination of design alter- natives which showed that designs such as the mid-deck concept offer the same degree of protection as double hulls, and in some cases, bet- ter. The changes will become man- datory for existing tankers in 1995.

They will apply to 25-year-old ships.

The amendments also include provi- sions for an enhanced program of surveys and inspections which are expected to result in many existing ships being scrapped because the cost of converting them to the new standards will be too high.

The changes to SOLAS are in- tended to improve the survivability of existing Ro/Ro passenger ships and will become effective October 1, 1994. They are based on new dam- age stability standards that have applied to all passenger ferries built since April 1990.

The new measures will be intro- duced during an 11-year phase-in period. The period of grace will de- pend upon the degree to which each ship complies with the new stan- dard. Those which only achieve 70 percent, for example, will have to be fully modified when the amendments enter into force. Those which al- ready reach 95 percent will be per- mitted to operate until October 1, 2005.

The SOLAS amendments, which were adopted in May 1992, will also improve the fire safety of existing passenger ships (including cruise ships). Some of the amendments will become applicable on October 1, 1994, others in 1997 and the remain- der on October 1, 2000.

The measures include require- ments for smoke detection and alarm and sprinkler systems in accommo- dation and service space, stairways and enclosures. Others include the provision of emergency lighting, gen- eral emergency alarm systems and other means of communication.

The SOLAS changes were heavily influenced by two major disasters: the capsizing of the ferry Herald of

Free Enterprise in 1987, in which 183 people died, and the fire on the

Scandinavian Star in 1988, in which 159 people died. It is expected that the extension of the modified SOLAS 90 standard in particular will result in several existing Ro/Ro ships being scrapped because of high conversion 58 Maritime Reporter/Engineering News