Dari referensi di bawah tentang perusahaan asuransi pelayaran Skuld, jelaslah bahwa kapal yang mengalami lay up harus kosong dari muatan, bahan bakar, dan awak (kecuali awak keamanan dan pemeliharaan).

IMO, ini berarti kapal sedang tidak beroperasi, entah u/ keperluan perbaikan, kondisi cuaca (misalnya, sedang musim dingin), atau regulasi (misalnya, pembatasan musim penangkapan ikan).

Ref: http://www.skuld.com/Products-and-Services/PI/Lay-up/

RISKS
The reduced risk under the P&I cover is mainly that a number of risk elements are limited. Therefore the main principles are:
- No cargo
- No fuel on board – but for safety requirements, or as per agreement
- No crew on board – but for required security and maintenance
- The vessel to remain in class and follow class recommendations as well as to adhere to rules and regulations applicable at the lay-up site