Interyacht, P.O. Box 49, Annapolis, Md. 21404. 261-2292. Marine Trader 34 and Marine Trader 36 trawlers available; privately owned trawlers managed by Interyacht also available. Marine Traders accomodate six adults, are air-conditioned, have stereos, swim platforms and heavy-duty electrical systems, fully equipped galleys including condiments and spices. A list of captains at varying rates available on request. Rates: Marine Trader 34, $1,100 per week, $670 for 3 days, $550 per weekend, $425 one day. Marine Trader 36, $1,200 per week, $730 for 3 days, $600 per weekend, $465 one day. Prices do not include food and fuel. Prices discounted 25 percent for preferred repeat customers, discounted 25 percent from Oct. 16 to Dec. 1. Deposit required $500.

Nautilus Charters, Galesville, Md. 20765. 261-5570. Albin 33 and Albin 36 trawlers available. Albins accommodate six adults, have swim platforms and fully equipped galleys including condiments and spices. Captains available at $70 per day plus $45 each overnight (weekend captain charge $185). Complete checkout and instruction available for $70 to charterers. Rates: Albin 33, $600 per week, Monday through Friday $415, $180 per weekend, $150 one day. Albin 36, $800 per week, Monday through Friday $660, $275 per weekend, $245 one day. Prices do not include food and fuel. Prices discounted 10 percent if paid in advance. Three-day weekend special rates (Friday, Saturday and Sunday or Saturday, Sunday and Monday: Albin 33 $435, Albin 36 $672. Deposit required $500.

Annapolis Bay Charters, Horn Point Marina, 121 Eastern Ave., Annapolis, Md. 21403. 261-1815. Marine Trader 34, Gulfstar 36, Albin 43 and Prarie 42 trawlers available. Marine Trader and Gulfstar trawlers accommodate six adults, Albin 43 accomodates eight adults and the Prarie 42 accomodates eight to 10 adults. Prarie 42 features include: twin turbo-diesel engines, double redundancy on electronics, Loran, autopilot, air conditioning, heat, bathtub, ice-maker, washer and dryer, enclosed aft deck with furniture. Captains available at about $100 per day, instruction on piloting and seamanship included. Rates: Marine Trader 34, $850 per week, Monday through Thursday or Thursday through Monday five-day charter $675, $600 three-day weekend. Gulfstar 36, $925 per week, five days $725, $675 three-day weekend. Albin 43, $1,200 per week, five days $950, $800 three-day weekend. Prarie 42, $2,250 per week, five days $1,925, $1,700 three-day weekend. Prices do not include food and fuel. Discounts of 10 to 15 percent for repeat charterers, discounts of 20 to 25 percent for booking more than one weekend. Ask about other special rates. Deposit required.

Southern Offshore Yachts, Suite 201 Yacht Haven, 305 Second St., Annapolis, Md. 21403. 261-1600. Chung Hwa 34 and Mainship 34 trawlers available. Each accommodates six adults. The Mainship features air conditioning, stereo, heat, refrigerator/freezer and a separate generator engine. Captains available at about $100 per day. Rates: Chung Hwa 34, $900 week, four-day weekend $600, four days mid-week $550, three-day weekend $425. Mainship 34, $1,000 week, four-day weekend $550, four days mid-week $450, three-day weekend $450. Prices do not include food or fuel. Discounts available for repeat charterers. Deposit required.